bluuebunny/crossref_metadata_2025 huggingface dataset:
Design of Secure Transmission of Multimedia Data Using SRTP on Linux Platform
Authors: H.G. Shashidhar , Dessai Sanket , Chaudhari Shilpa
Published: April 2019

This paper aims for providing a viable solution for security in streaming media technology. Service providers do not want the end users to capture and duplicate streaming media data. Once captured data can be re-distributed to millions without any control from the source.  Licensing issues also dictate the number of times end user may utilize the data. Encryption is not sufficient as it leaves the system vulnerable to duplication and recording after decryption. In this paper an attempt has been made to transmit digital multimedia data to multiple users. The transmission of the video/audio data has been attempted from one PC to another PC. While doing this, security considerations have to be taken care by using suitable encryption/decryption techniques.  A research carried out on the different data transmission protocols reveals that the Secure Real Time Transport Protocol (SRTP) is one of the best available protocols. Hence the SRTP has been deployed in this project on Linux OS using socket programming. The code for the transmitter and the receiver is designed and developed around the SRTP library for transmission of multimedia data.  The solution is illustrated by choosing an example of a video clip for transmission and reception. This model increasing the security of streaming media and adds a measure of integrity protection, but it is primarily intended to aid in replay preventions.
Linux Kernel on ARM9
Authors: Selokar Pradip Ram
Published: April 2019

ARM9 supports the Linux Kernel. On a development system it is advantageous to load the Root File System (RFS) through Network File System (NFS). Several pieces of software are involved to boot a linux kernel on SAM9 products. First is the ROM code which is in charge to check if a valid application is present on supported media (FLASH, DATAFLASH, NANDFLASH, and SDCARD). 
VLSI Design and Comparison of DA and LMS Based Reconfigurable FIR Filter
Authors: Hemanthkumar P. , Kiran Y. Sai , Teja V. Nava
Published: April 2019

Here, we exhibit the design optimization of one- and two-dimensional fully-pipelined computing structures for area-delay-power-efficient implementation of finite impulse response (FIR) filter by systolic decomposition of distributed arithmetic (DA)-based inner-product computation. This plan is found to offer a flexible choice of the address length of the look-up-tables (LUT) for DA-based computation to determine suitable area-time trade-off. It is seen that by using smaller address-lengths for DA-based computing units, it is possible to decrease the memory-size but on the other side that leads to increase of adder complexity and the latency. For efficient DA-based realization of FIR filters of different orders, the flexible linear systolic design is implemented on a Xilinx Virtex-E XCV2000E FPGA using a hybrid combination of Handel-C and parameterizable VHDL cores. Various key performance metrics such as number of slices, maximum usable frequency, dynamic power consumption, energy density and energy throughput are estimated for different filter orders and address-lengths. Obtained results on analysis shows that performance metrics of the proposed implementation is broadly in line with theoretical expectations. We have seen that the choice of address-length M=4 gives the best of area-delay power-efficient realizations of the FIR filter for different filter orders. Moreover, the proposed FPGA implementation is found to involve significantly less area-delay complexity compared with the existing DA-based implementations of FIR filter.
Hardware Implementation of 3-level Inverter using Microcontroller for Single Phase Induction Motor
Authors: B.M. Veena , S.K. Parimala
Published: April 2019

The conventional two level inverter has many limitations for high voltage & high power applications. The term multilevel began with the three-level inverter. Subsequently, several multilevel inverter topologies have been developed. However, the elementary concept of a multilevel inverter to achieve higher power is to use a series of power semiconductor switches with several lower voltage dc sources to perform the power conversion by synthesizing a staircase voltage waveform. Output voltage of 3 level inverter consists of 3 levels, which results smoother output. And hence the THD will be reduced. In this paper Simulink of 3 level inverter and the hardware implementation of micro controller based control of multilevel inverter for single phase Induction motor are presented.
Hardware Implementation of Intrusion Detection System for Ad-Hoc Network
Authors: Mano Reji , Raja P.C. Kishore , Joseph Christeena , Baskar Radhika
Published: April 2019

New technologies have been developed in wireless adhoc network need more security. To widespread the adhoc networks we turn in the attention of wireless hand held device mobile phones communicate with short distance using wireless lan card or Bluetooth. The performance of mobile phone are improved greatly for last few years .so security is more important for mobile networks In this paper  hardware implementation of single hop ad-hoc network is implemented and analysed using microcontroller. The protocol implemented in this paper is primarily based on, Ad hoc On-Demand Distance Vector routing. We adopt On Demand Distance Vector routing solely based on source routing and “On Demand” process, so each packet does not have to transmit any periodic routing information. We implemented   intrusion detection system with five different nodes and the performance parameters like packet delivery ratio, throughput, delay are computed with attacker and without attacker and on demand distance vector routing protocols is proposed to implement in hardware using Zigbee
A Gracefully Degrading and Energy-Efﬁcient FPGA Programming using LabVIEW
Authors: Kumar Reddy B. Naresh , Suresh N. , Ramesh J.V.N.
Published: April 2019

Programming of Field Programmable Gate Arrays (FPGAs) have long been the domain of engineers with VHDL or Verilog expertise. FPGA’s have caught the attention of algorithm developers and communication researchers, who want to use FPGAs to instantiate systems or implement DSP algorithms. These efforts however, are often stifled by the complexities of programming FPGAs. RTL programming in either VHDL or Verilog is generally not a high level of abstraction needed to represent the world of signal flow graphs and complex signal processing algorithms. This paper describes the FPGA Programs using Graphical Language rather than Verilog, VHDL with the help of LabVIEW and features of the LabVIEW FPGA environment.
FPGA based Implementation of Symmetrical Reduced Switch Multilevel Inverter
Authors: Venkataramanan K. , Shanthi B. , Sivakumaran T. S.
Published: April 2019

Multilevel inverter has become more popular and attractive for drive applications. Among the various modulation techniques, Carrier based techniques has been commonly used because of their simplicity and flexibility. This paper presents the comparisons of bipolar multicarrier pulse width modulation for the new symmetrical multilevel inverter. The performance parameters of new multilevel inverter were analyzed through various switching strategies. The detailed study has been carried out by MATLAB/SIMULINK. The real time implementation was carried out using FPGA. The results of both simulation and experimentation were compared.
Implementation of High Speed Vedic Multiplier Using Vertical and Crosswise Algorithm
Authors: Vadiraj G. , Shivanand K. , Sampat B. , Subramanya Nayak G.
Published: April 2019

Multiplication is an important fundamental function in arithmetic operations. Multiplication-based operations such as Multiply and Accumulate (MAC) and inner product are some of the frequently used operations in many Digital Signal Processing (DSP) applications such as convolution, Fast Fourier Transform(FFT), filtering and in microprocessors in its arithmetic and logic unit. Since multiplication dominates the execution time of most DSP algorithms, so there is a need of high speed multiplier. Higher throughput arithmetic operations are important to achieve the desired performance in many real-time signal and image processing applications. In this project, the comparative study of Vedic multiplier and Sequential multiplier is done for low power requirement and high speed. The proposed architecture is based on the Vertical and Crosswise algorithm of ancient Indian Vedic Mathematics, which increases the speed of multiplier by reducing the number of clock cycles thus achieving the greater speed of the processor or system.
On-chip AMBA Bus Based Efficient Bridge between High Performance and Low Peripheral Devices
Authors: Shrivastava Anurag , Kumar Sharma Sudhir
Published: April 2019

Today’s scenario of SOC deals with integrity and sharing of information or data with various level of communication. AMBA bus protocol has been proposed by ARM community to justify the uneven demand of integrity .In this paper functional description and implementation of high peripheral devices supporting protocol AXI2.0 and its interface between low peripheral devices has been proposed. The connection named as bridge take care of the protocol mismatch and operates on data transfer for uneven speed demand. Asynchronous   FIFO has been considered to avoid the complex handshaking mechanism. The design has been implemented within VHDL and implemented on Xilinx Virtex 4.
MEMS Seismic Sensor with FPAA Based Interface Circuit for Frequency-Drift Compensation using ANN
Authors: Pawase Ramesh , Futane N.P.
Published: April 2019

Electrochemical MEMS seismic sensor is limited by its non-ideality of frequency dependent characteristics hence interface circuits for compensation is necessary. The conventional compensation circuits are limited by high power consumption, bulky external hardware circuitry. In these methods digital circuits are also limited by inherent analog to digital conversion and vice versa which consumes significant power, acquires more size and limits speed.  A Field programmable analog array (FPAA) overcomes these limitations and gives fast, simple and user friendly development platform with less development speed comparable to ASIC. Recently FPAA becoming popular for rapid prototyping. The proposed system presents FPAA (Anadigm AN231E04) based hardware implementation of ANN model. Using this FPAA based compensation circuit, the error in frequency drift have been minimized in the range of 3.68% to about 0.64% as compared to ANN simulated results in the range of 23.07% to 0.99 %. This single neuron consumes of power of 206.62 mW. and has minimum block wise resource utilization.  The proposed hardware uses all analog blocks which remove the requirement of ADC and DAC reducing significant power and size of interface circuit. This work gives the SMART MEMS seismic sensor with reliable output and ANN based intelligent interface circuit implemented in FPAA hardware.
Metal-Embedded SU-8 Slab Techniques for Low-Resistance Micromachined Inductors
Authors: Mapato Manot , Klysuban Prapong , Kulworawanichpong Thanatchai , Chomnawang Nimit
Published: April 2019

This work presents new fabrication technique for micro power-inductors by using metal-embedded SU-8 slab techniques. This techniques used X-ray lithography to fabricate high aspect-ratio LIGA-like micro-structures in form of embedded structure in SU-8 slab and applied for inductor’s winding fabrication with aspect-ratio of 10. Thishigh-aspect ratiostructure can provide very low resistance winding but preserve small form factor and low profile. Inductors were designed as pot-core structures with8 μm-thick permalloy core and 250 μm-thick copper winding. 4-types of inductors were fabricated including 3, 5, 10 and 16 turns in the area of 1.8 mm2 to 9.5 mm2. All inductors have overall heights of 370 μm, measured inductance value in a range of 70 nH to 1.3 μH at 1 MHz and DC resistance value of 30 mΩ to 336 mΩ for 3 turns to 16 turns respectively. From this result, high aspect-ratio inductors show<span style="font-size: 10.0pt; font-family: 'Times New Roman','serif'; mso-fareast-font-family: Calibri; mso-bidi-font-family: 'Cordia New'; mso-bidi-theme-font: minor-bidi; mso-ansi-language: EN-US; mso-fareast-language: EN-US; mso-bidi-language: TH;"> good results including low-resistance, high inductance, and a small form factor as expected. 
FPGA implementation of DS-CDMA Transmitter and Receiver
Authors: Mandalapu Harinath , Murali Krishna B
Published: April 2019

Direct sequence spread Spectrum (DSSS) is also known as direct sequence code division multiplexing. In direct sequence spread spectrum the stream of information to be transmitted is divided into small pieces each of which is allocated across to a frequency channel across the spectrum. Data signal at the point of transmission is collaborated with a higher data-rate bit sequence (also called chipping code) that divides the data according to a spreading ratio. A redundant chipping code helps the signal resist interference and also enables the original data to be recovered if data bits are damaged during the transmitting. In this project direct sequence spread spectrum principle based code division multiple access (CDMA) transmitter and receiver is implemented on SPARTAN 3E FPGA. The Xilinx synthesis technology (XST) of Xilinx ISE tool used for synthesis of transmitter and receiver on FPGA Spartan 3E.
Embedded Hardware Circuit and Software Development of USB based Hardware Accelerator
Authors: Dessai Sanket , G. Sandeep
Published: April 2019

This paper focus on design and develop a Hardware Accelerator which can plug in to Universal Serial Bus of any modern low power low cost embedded development system to do complex processing in a plug and play development environment. Cryptographic algorithms, steganography and encoding decoding applications can use co-devices to accelerate performance. In this paper an implementation of a hardware infrastructure for computing though USB bus of any small scale embedded controller board. Execution engine of the accelerator will be an FPGA which is connected to a USB controller with DDR memory to store user data. FPGAs can perform the process faster than low power microcontrollers to solve such algorithms. For the implementation XILINX ARTIX 7 FPGA is used to off load the algorithm for faster processing. System also has a Cypress USB interface chip for offloading data path. Hardware also has a DRAM memory for dumping the data to be stored. Design also explores different futuristic features like interrupt connection for faster response path, shared memory architecture for hand shake mechanism and GPIO connection for implementation of faster interfaces for IO expansion.
Design And Analysis Of CMOS Low Noise Amplifier Circuit For 5-GHz Cascode and Folded Cascode In 180nm Technology
Authors: Kanthi T. , Sharath Babu Rao D.
Published: April 2019

This paper is about Low noise amplifier topologies based on 0.18µm CMOS technology. A common source stage with inductive degeneration, cascode stage and folded cascode stage is designed, simulated and the performance has been analyzed. The LNA’s are designed in 5GHz. The LNA of cascode stage of noise figure (NF) 2.044dB and power gain 4.347 is achieved. The simulations are done in cadence virtuoso spectre RF.
Design Considerations of Reconfigurable CMOS Mixers for Multi-Standard Communication Receiver Systems
Authors: Kumar Vishnoi Manoj , Sai Srikant Satya
Published: April 2019

This paper has been carried out the study of reconfigurable wide-band mixers that can do the frequency conversion and gain variation standards with low noise and high linearity used in multi-mode and multi-standard receivers. Over the last few years reconfigurability has become very popular in adopting technology to meet the wideband wireless communication specifications that is compatible with multi-standards like GPS (1.57 GHz), WLAN (2.4 GHz - 5.9 GHz), Bluetooth (2.402 – 2.483 GHz) and ZigBee (0.784 - 0.915 GHz) in low power consumption environment. The reconfigurability can be achieved between low and high band modes through power switching in RF frequency mixers. It can be achieved by flipping the input RF signal between gate and source terminal of input transistor and altering the trans-impedance stage output. With the concept of reconfigurable transistor pair with open and short circuit stubs, one can not only find the configurable gain with center frequencies 7.355, 8.65, 11.35 and 12.65 GHz but also with high power efficiency. Tow Thomas Bi-Quad Topology other than the traditional current commuting technique for the second order trans-impedance amplifier stage, works as a current mode filter over a tunable bandwidth. The active Gilbert mixers are used widely in most of communication system, due to its significance gain, perfect isolation, and linearity in response.
Design and Implementation of a New Architecture of a Real-Time Reconfigurable Digital Modulator (DM) Into QPSK, 8-PSK, and 16-PSK on FPGA
Authors: Andre Walder , Couillard Olivier
Published: April 2019

One of the prerequisites of Electronic Warfare (EW) is to have the means to provide secure point-to-point wireless data and voice communications with other ground stations. New technologies are giving rise to bigger information security threats. This situation illustrates the best the urgency of reducing the development and upgrade time of EW systems. Previous works suggest that digital systems are the best candidates for this purpose and therefore form the backbone of modern Electronic Warfare. Indeed, Digital Modulation (DM) techniques are widely used in modern wireless communication systems. This is largely due to their high resistance to noise and their high transmission capacity that can be achieved through data multiplexing. In this article, a new reconfigurable architecture of a Phase Shift Keying (PSK) modulation is described. The latter can be configured in real time to produce the following modulation schemes: QPSK, 8-PSK, and 16-PSK without having to regenerate the FPGA configuration bits. This action can be done by software via programming or manually using a DIP switch. The proposed design is implemented on the Xilinx xc7k325tfbg900 FPGA using the Genesis 2 development board. The Vivado Physical Design Automation tool indicates a power consumption of 303 mW by the on-chip circuit. The experimental results are in agreement with the simulations.
Verilog based efficient convolution encoder and viterbi decoder
Authors: Rawoof Md. Abdul , Ch. Umasankar , Kumar D. Naresh , Basha D. Khalandar , Madhur N.
Published: April 2019

In the today’s digital communication Systems, transmission of data with more reliability and efficiency is the most challenging issue for data communication through channels. In communication systems, error correction technique plays a vital role. In error correction techniques, The capacity of data can be enhanced by adding the redundant information for the source data while transmitting the data through channel. It mainly focuses on the awareness of convolution encoder and Viterbi decoder. For decoding convolution codes Viterbi algorithm is preferred.
Governo, ditadura e ciências sociais: o caso português
Authors: Ágoas Frederico
Published: April 2019

O presente artigo discute a presumida inexistência de ciências sociais durante o Estado Novo português, executa uma síntese dos mais recentes trabalhos sobre a história da sociologia em Portugal, integra-a no contexto internacional pertinente e sugere que a institucionalização parcial daquele saber no decurso da ditadura pode ser compreendida como “consequência não desejada” de determinadas ações do regime e resultado dos esforços subsequentes da parte de quadros médios da burocracia oficial e/ou de institutos conexos de aconselhamento político no sentido de dar dignidade universitária às suas atividades técnicas. De forma complementar, o mesmo processo pode ainda ser entendido enquanto “autonomização” progressiva e atalhada de “campos sociais” científico-sociais com matrizes diversas.
Estratificação horizontal da educação superior no Brasil: desigualdades de classe, gênero e raça em um contexto de expansão educacional
Authors: Carvalhaes Flavio , Ribeiro Carlos Antonio Costa
Published: April 2019

O acesso ao ensino superior é fundamental para diminuir as desvantagens de pessoas com origens nos grupos menos privilegiados, na medida em que aumenta as chances de mobilidade social ascendente. A literatura sobre estratificação educacional nos ensina que tanto o acesso aos diferentes tipos de modalidade ofertada (bacharelados, licenciaturas, cursos tecnológicos) quanto quais cursos são escolhidos (medicina, administração ou pedagogia) influenciam as chances de alcançar os melhores empregos. Tendo em vista que os diferentes diplomas universitários não são iguais em termos das vantagens que trazem para os diplomados, e que há diferenças de acesso entre os cursos universitários em termos de classe, gênero e raça, o perfil de acesso a esses cursos deve ser analisado. Neste artigo, avaliamos de forma inédita e desagregada o padrão de expansão do ensino superior brasileiro e como se configuram as oportunidades no sistema. Mobilizando dados do Inep, nossos resultados apontam que pessoas com origem nos estratos mais altos (pais com ensino superior) tinham probabilidade significativamente maior de entrar nos cursos de maior prestígio (medicina, odontologia, engenharias etc.) e em instituições públicas do que pessoas com origem nas classes mais baixas. Também encontramos forte estratificação por gênero tendo em vista que homens têm maior probabilidade de entrar em cursos das ciências exatas e mulheres em cursos relacionados ao ensino e aos cuidados. A estratificação por gênero, no entanto, combina-se de forma não linear com a estratificação por classe de origem, na medida em que há cursos típicos de homens de classe alta, mulheres de classe alta, homens de classe baixa e mulheres de classe baixa.
Benjamin, Walter. Ensaios sobre Brecht
Authors: Querido Fabio Mascaro
Published: April 2019

Resenha do livro de Walter Benjamin, Ensaios sobre Brecht, São Paulo, Boitempo, 2017.
Rios, Victor M. Human targets: schools, police, and the criminalization of Latino youth
Authors: Rodrigues Herbert
Published: April 2019

Resenha do livro de Victor M. Rios. Human Targets: Schools, Police, and the Criminalization of Latino Youth, Chicago, University of Chicago Press, 2017.
Constitutional sociology and corporations: a conversation with Gunther Teubner
Authors: Gascón Ricardo Hernán Valenzuela
Published: April 2019

O presente trabalho corresponde a uma entrevista realizada com o sociólogo alemão Gunther Teubner. Nele, o autor aborda aspectos centrais relacionados à sociologia das constituições e sua contribuição para a compreensão dos efeitos negativos do lado negro da diferenciação funcional. Gunther Teubner é professor emérito de direito privado e sociologia do direito na prestigiosa Universidade Goethe. Seu trabalho é amplamente conhecido por suas contribuições para o campo da sociologia do direito, particularmente por sua teoria do direito autopoiético, o conceito de direito reflexivo e, atualmente, por sua teoria da constitucionalização da sociedade.
Léxicos urbanos e arenas públicas: tempos e espaços no Centro de Fortaleza
Authors: Barreira Irlys Alencar F.
Published: April 2019

O presente artigo referencia-se nas classificações, representações e propostas de intervenção urbana como matéria relevante para o registro da cidade como prática e linguagem. O centro de Fortaleza oferece aporte empírico para a questão por constituir local exemplar de acionamento de classificações, reformas e intervenções feitas em diversos momentos. Basendo-se nos aportes metodológicos da ritmoanálise, sugeridos por Henri Lefebvre, a pesquisa registra os vários movimentos, lentos ou fortes, que permeiam as relações sociais cotidianas no centro. Inclui as percepções e classificações de atores e porta-vozes que contribuem para conformar um léxico urbano acionado, sobretudo através de arenas públicas que adquirem realce em determinadas conjunturas.
Comparison of Rupture Risk of Intracranial Aneurysms Between Familial and Sporadic Patients
Authors: Mensing Liselore A. , Greving Jacoba P. , Verhoeff Tessa A. , Rinkel Gabriel J.E. , Ruigrok Ynte M.
Published: April 2019

Background and Purpose

A much higher rupture rate for patients with familial intracranial aneurysms (IA) compared with patients with sporadic IA has been reported in a study with highly selected familial aneurysms using sporadic patients from other populations a controls. We aimed to validate these findings in a large independent series of Dutch patients with familial and sporadic IA.

Methods

We conducted a secondary analysis of our institutional cohort of patients who were screened for IAs between 1994 and 2016. We assessed the incidence of aneurysmal subarachnoid hemorrhage between familial, defined as ≥2 affected first-degree relatives with aneurysmal subarachnoid hemorrhage and unruptured IA (UIA), and sporadic patients with UIA with Cox regression analysis.

Results

We identified 62 familial IA patients with 91 UIA and 412 sporadic IA patients with 542 UIA. Despite familial aneurysms being smaller and more often located at low risk sites than sporadic IA, 3 familial patients had aneurysmal subarachnoid hemorrhage (0.77 ruptures per 100 aneurysm-years [95% CI, 0.20–2.09]) compared with 7 sporadic patients (0.51 ruptures per 100 aneurysm-years [95% CI, 0.22–1.01]). As compared to sporadic UIA, familial UIA seems to have a 3-fold higher risk of rupture (hazard ratio, 2.9 [95% CI, 0.6–14]).

Conclusions

Our results suggest a slightly increased risk of aneurysm rupture for familial compared with sporadic IA, although we were not able to demonstrate this with statistical significance. However, the rupture risk seems less strongly increased than found in a previous study. Based on our results, we recommend to treat familial UIA more aggressively.
The genus Bradysia Winnertz (Diptera, Sciaridae) in New Caledonia, with the description of thirteen new species
Authors: VILKAMAA PEKKA , HIPPA HEIKKI , MOHRIG WERNER
Published: April 2019

The following species of the genus Bradysia Winnertz, 1867 are recognized from New Caledonia, all newly described: Bradysia aequispina sp. n., B. centidens sp. n., B. clavistylis sp. n., B. filigera sp. n., B. gemellata sp. n., B. gibbosa sp. n., B. melina sp. n., B. nudilobata sp. n., B. paucidens sp. n., B. planistylata sp. n., B. seticornis sp. n., B. spissa sp. n. and B. stricta sp. n. A key to the species is given.
Microphorella similis sp. nov. from Switzerland, a close relative of the type species, M. praecox (Loew) (Diptera: Dolichopodidae: Parathalassiinae)
Authors: BROOKS SCOTT E. , ULRICH HANS
Published: April 2019

Microphorella similis Brooks, a new Palaearctic species, is described and illustrated. It is very closely related to M. praecox (Loew, 1864), the type species of the genus. The new species is known from Leuk-Pfynwald in the Swiss Alps, where it was found sympatrically with M. praecox on gravel in the floodplain of the Rhône River in May. A diagnosis and abridged redescription of M. praecox is also provided, including detailed illustrations of the male genitalia. Both M. praecox and the new species share several features in common with the recently described Tunisian species, M. cassari Gatt, 2011.
Cytotaxonomic considerations on the sex chromosome variation observed within Acomys ngurui Verheyen et al. 2011 (Rodentia Muridae)
Authors: CASTIGLIA RICCARDO , ANNESI FLAVIA
Published: April 2019

The taxonomy of the East African Muridae belonging to the Acomys spinosissimus Peters 1852 species complex has been recently revised (Verheyen et al., 2011). Two new species have been described by means of external morphologic analysis, craniometry, enzymes, mitochondrial DNA sequences and karyological information. For one of the two new species, Acomys ngurui Verheyen et al. 2011, a polymorphic karyotype has been observed. In fact, for 19 of the 22 karyotyped individuals, the karyotype is identical to the one described for A. spinosissimus s. s. (2n = 60, aFN = 68), characterized by a sex chromosome constitution of the XX/XY type, with an acrocentric X and a submetacentric Y (Dippenaar and Rautenbach, 1986). The remaining three females possess a karyotype that resembles the one reported by Matthey (1965) and Barome et al. (2001) characterized by a unique giant metacentric X chromosome (Xg), and by a variable diploid number (2n = 59–62). These females were found in the three localities in Tanzania together with specimens with the typical ‘spinosissimus’ karyotype. Specimens carrying the Xg were not distinguishable on the basis of their mtDNA sequence or morphology from the other specimens with XY karyotype (Verheyen et al., 2011). The authors concluded that the available evidence did not allow one to give taxonomic value to this chromosomal configuration, characterized by a particular sex determination, hoping for future work that will study the animals bearing this typical karyotype in more detail.
Redescription of Zinagon chilensis (Silvestri, 1903) from Chile, with a species list of Iulomorphidae from the Southern Hemisphere (Diplopoda: Spirostreptida: Epinannolenidea)
Authors: KORSÓS ZOLTÁN , READ HELEN J.
Published: April 2019

The epinannolenidean diplopod species Zinagon chilensis (Silvestri, 1903) is redescribed based on recently collected ma-terial from Chile, as well as on the re-examination of type specimens of both Iulomorpha chilensis Silvestri, 1903, andZinagon osorno Chamberlin, 1957. The latter is here designated a junior subjective synonym. A list of the species of thefamily Iulomorphidae is provided, including 15 genera occurring in the Southern Hemisphere, i.e. South America, South Africa, Australia, and New Zealand.
Revision of the genus Siolicaris Jakobi, 1972, with redescriptions of S. sioli (Noodt, 1963) and S. jakobi (Noodt, 1963) from South America, and S. sandhya (Ranga Reddy, 2001) comb. nov. from India (Copepoda, Harpacticoida, Parastenocarididae)
Authors: CORGOSINHO P.H.C. , REDDY Y. RANGA , ARBIZU P. MARTÍNEZ
Published: April 2019

Recent revision of the family Parastenocarididae has revealed the existence of different monophyletic groups within therepository genus Parastenocaris Kessler, 1913 sensu lato. Here, we redefine the genus Siolicaris Jakobi, 1972, arguingfor its monophyly. All the hitherto known Neotropical species of Siolicaris and also the Indian Siolicaris sandhya (RangaReddy, 2001) comb. nov., which are redescribed herein, share what we consider to be a unique constellation of synapo-morphies: in the female, thoracopod 3 enp is absent; in the male, thoracopod 4 enp is reduced; thoracopod 3 exp is robust,strongly incurved and with a very strong thumb, longer than apophysis; and in both sexes, thoracopod 5 is trapezoidal,with all the setigerous elements inserted on the very distal margin. In addition, the proximal position of furcal setae I–IIItogether with the extreme reduction of seta II and the reduction or complete absence of the proximal-most seta on thora-copod 5 exp are other good indications, justifying the inclusion of Siolicaris within a broader group of Neotropical Paras-tenocarididae. The genus is probably of Gondwanan origin, with its known members distributed in the northern SouthAmerica (Amazonian region) and southeastern India. Parastenocaris digitata Noodt, 1963a is treated here as a synonymof Siolicaris jakobi (Noodt, 1963a). Parastenocaris chelifer Delachaux, 1924 and Parastenocaris xyrophora Noodt & Galhano, 1969 are considered species inquirendae of the genus Siolicaris, pending their detailed redescription.
The Acentropinae (Lepidoptera: Pyraloidea: Crambidae) of Africa
Authors: AGASSIZ DAVID J. L.
Published: April 2019

The species of Acentropinae recorded from Africa are listed and described with illustrations of the adults and genitalia.Ten new synonymies are established. The following species are described new to science: Parapoynx zambiensis,Argyrophorodes angolensis, A. suttoni, Elophila acornutus, E. ealensis, E. minima, Nymphicula hexaxantha, Eoophylabelladotae, E. cameroonensis, E. carcassoni, E. citrialis, E. dentisigna, E. euprepialis, E. grandifuscalis, E. interopalis,E.kingstoni, E. piscatorum, E. platyxantha, E. principensis, E. ruwenzoriensis, E. stepheni, E. tanzanica. E. nyasalis kenyalis is described as a new subspecies.
A systematic review of Neotropical Caladomyia Säwedal (Diptera: Chironomidae)
Authors: TRIVINHO-STRIXINO SUSANA
Published: April 2019

Eleven new species of the genus Caladomyia Säwedal, 1981, from lotic and lentic systems of the state of São Paulo are described and figured: Caladomyia angelae sp. n., Caladomyia carolae sp. n., Caladomyia canine sp. n., Caladomyia jaragua sp. n., Caladomyia yara sp. n., Caladomyia capaopreto sp. n., Caladomyia curumim sp. n., Caladomyia bruneola sp. n., Caladomyia comunis sp. n., Caladomyia carolensis sp. n., Caladomyia kapilei sp. n. Additionally the male of C. humboldti Säwedal is redescribed and its immatures and the female are described. Keys to males, pupae and larvae of known species of the genus Caladomyia are provided.
A new species of Progonocimicidae (Hemiptera: Coleorrhyncha) from northeastern China
Authors: DONG QIUPING , YAO YUNZHI , REN DONG
Published: April 2019

A new fossil species, Cicadocoris varians sp. n., of the family Progonocimicidae is described from the Middle Jurassic Jiulongshan Formation of Daohugou Village, Inner Mongolia, China. This Progonocimicidae is a well-preserved unusual fossil showing different sizes and proportions of the left and right tegmen.
Description of the last instar larva of Forcepsioneura sancta (Hagen in Selys 1860) (Odonata: Protoneuridae)
Authors: ANJOS-SANTOS DANIELLE , PESSACQ PABLO
Published: April 2019

The Neotropical genus Forcepsioneura Lencioni 1999 is composed of six described species (Garrison et al. 2010) endemic to the Brazilian Atlantic forest (Machado 2001; Garrison et al. 2010). The knowledge of the immature stages is restricted to the inclusion of the genus in two keys of Protoneuridae genera (Costa et al. 2004; Neiss & Hamada 2012) and brief comments on labium characters (Costa et al. 2004), without formal description. Here we describe the last instar larva of Forcepsioneura sancta (Hagen in Selys 1860) based on specimens collected in Rio de Janeiro State, Brazil.
Review of the family Platyxanthidae Guinot, 1977 (Crustacea, Decapoda, Brachyura, Eriphioidea), with the description of a new genus and a key to genera and species
Authors: THOMA BRENT P. , NG PETER K. L. , FELDER DARRYL L.
Published: April 2019

During recent studies of phylogenetic relationships within Eriphioidea (sensu Ng et al. 2008), we recovered molecularevidence that the genus Platyxanthus A. Milne-Edwards, 1863, was not monophyletic. This prompted detailedmorphological examination of the group, which confirmed that clear differences in characteristics of the carapace, firstmale pleopod, antennae, antennules, epistome, abdomen, and thoracic sternum serve to separate the species ofPlatyxanthus into three distinct groups. Comparison of the type material of Peloeus cokeri (Rathbun, 1930), (formerlyPlatyxanthus cokeri) to Peloeus armatus Eydoux & Souleyet, 1842, indicated that P. cokeri is a junior synonym of P.armatus and that Gordonoxanthus Števčić, 2011 (type species Platyxanthus cokeri Rathbun, 1930) is thus a juniorsynonym of Peloeus. Danielethus n. gen. is described to accommodate Platyxanthus patagonicus A. Milne-Edwards,1863, and Platyxanthus crenulatus A. Milne-Edwards, 1863. A key to the known genera and species of the family Platyxanthidae Guinot, 1977 is provided.
A new species of the genus Oligodon Fitzinger, 1826 (Squamata: Colubridae) from northern Vietnam, southern China and central Laos
Authors: DAVID PATRICK , NGUYEN TRUONG QUANG , NGUYEN TAO THIEN , JIANG KE , CHEN TIANBO , TEYNIÉ ALEXANDRE , ZIEGLER THOMAS
Published: April 2019

A new species of the genus Oligodon Fitzinger, 1826, Oligodon nagao sp. nov., is described on the basis of five specimensoriginating from Lang Son and Cao Bang provinces in northern Vietnam, Guangxi Autonomous Region in southernPeople’s Republic of China, and from Khammouane Province in central Laos PDR. This species differs from other speciesof the region by the combination of 15 or 17 dorsal scale rows at midbody, unforked hemipenes, not spinose but withpapillae, entire cloacal plate, a high number of ventrals, a rather short tail and dorsal pattern made of numerous dark,butterfly-shaped blotches. On the basis of the morphology of its hemipenes, Oligodon nagao sp. nov. belongs to the groupof Oligodon cinereus. This new species is compared with other species of the Indochinese Peninsula and China with 15or 17 dorsal scale rows, especially Oligodon joynsoni (Smith, 1917). An updated list of the Oligodon species of this region is provided.
A new species of Crinia (Anura: Myobatrachidae) from the Flinders Ranges, South Australia
Authors: DONNELLAN S. , ANSTIS M. , PRICE L. , WHEATON L.
Published: April 2019

We describe, as a new species, the northern Flinders Ranges populations of the myobatrachid frog Crinia riparia. It isdistinguished from C. riparia sensu stricto on the basis of reciprocal monophyly of mitochondrial genes, absence ofhaplotype sharing in a nuclear gene, fixed differences in allozyme loci and differences in larval oral disc morphologyconsistent with less adaptation to stream habitats. We were not able to reliably distinguish the taxa on the basis of adultmorphology. The geographic range of C. riparia sensu stricto is now reduced to a 75 kilometre section of the southernFlinders Ranges from Napperby Gorge in the south to Mt Brown in the north suggesting that an assessment of its conservation status is warranted.
New, mainly southern hemisphere, freshwater families of Amphipoda (Crustacea), together with a description of the first freshwater calliopiid, Lutriwita bradburyi gen. nov. et sp. nov.
Authors: LOWRY J. K. , MYERS A. A.
Published: April 2019

Nine new freshwater amphipod families are described: Chillagoeidae fam. nov.; Crangoweckeliidae fam. nov.;Dussartiellidae fam. nov.; Falklandellidae fam. nov.; Giniphargidae fam. nov.; Pseudingolfiellidae fam. nov.; Sandroidaefam. nov.; Sensonatoridae fam. nov. and Uronyctidae fam. nov. The subfamily Seborgiinae Holsinger, 1980 is raised tofamily level and two families, Austroniphargidae Iannilli, Krapp & Ruffo, 2011 and Pseudoniphargidae Karaman, 1993,are revised. The first freshwater example of the extensive marine family Calliopiidae, Lutriwita bradburyi gen. nov., sp. nov., is described from Australia.
A new and three known species of the genus Tylencholaimellus Cobb in M.V. Cobb, 1915 (Nematoda: Dorylaimida) from Changbai Mountain, China
Authors: ZHANG MIN , AHAD SUMAYA , BANIYAMUDDIN M. , LIANG WENJU , AHMAD WASIM
Published: April 2019

A new and three known species of the genus Tylencholaimellus Cobb in M.V. Cobb, 1915 are described from ChangbaiMountain, Northeast China. Tylencholaimellus sinensis n. sp. species is characterized by having a medium sized body (L=1.1–1.3 mm); outer cuticle with fine transverse striations; inner layer distinctly striated; radial refractive elementsabundant; labial disc absent; lip region offset by constriction; lips rounded and amalgamated; odontostyle 18–19 µm,odontophore 7–8 µm, combined length 25–27μm; anterior uterine sac 0.8–1.6 mid body diameters long; mono-opisthodelphic female genital system with small anterior uterine sac; transverse vulva and short conoid tail.Tylencholaimellus striatus Thorne, 1939, T. montanus Thorne, 1939 and T. cinctus Orr & Dickerson, 1965 are described for the first time from this region of the world.
A new genus and species of Apoloniinae (Acari: Trombiculidae) from Oman
Authors: STEKOLNIKOV ALEXANDR A. , CARRANZA SALVADOR , GOMEZ-DIAZ ELENA
Published: April 2019

A new chigger mite genus and species, Arabapolonia omanensis gen. nov. et sp. nov. is described from 4 gecko species,Hemidactylus lemurinus, H. homoeolepis (Gekkonidae), Ptyodactylus hasselquistii (Phyllodactylidae), and Pristurusrupestris (Sphaerodactylidae) collected in Oman. The new genus is characterized by the simple cheliceral blade, singlepalpal claw, palpal tarsus 6BS, non-reduced scutum without nasus bearing 2 AM, 2 AL and 2 PL setae, flagelliformsensilla branched in the distal half, 2 pairs of eyes, 7-segmented legs with onychotriches, the absence of some leg setae(subterminala, parasubterminala, pretarsalae I and II, microgenuala II, tibiala III, and coxala II), the absence of the sternal setae between leg coxae I (fSt = 0.2.4), and by the presence of tracheae.
The tadpole of Allobates sumtuosus (Morales, ‘2000’ 2002) (Anura: Aromobatidae) from its type locality at Reserva Biológica do Rio Trombetas, Pará, Brazil.
Authors: SIMÕES PEDRO IVO , LIMA ALBERTINA P.
Published: April 2019

Allobates sumtuosus was described by Morales (“2000” [2002]), partially based on individuals collected by R.I. Crombie and R.C. Lynn at Reserva Biológica do Rio Trombetas (REBio Trombetas - Estado do Pará, Brazil). The holotype proceeded from the same locality.
Description of three new species of Nymphistrini (Coleoptera: Histeridae: Haeteriinae) from Central America
Authors: TISHECHKIN ALEXEY K. , CÁRDENAS ALIDA MERCADO
Published: April 2019

Three new species belonging to the tribe Nymphistrini of the obligate myrmeco- and termitophilous subfamily Haeteriinae (Coleoptera: Histeridae) are described from Central America: Nymphister rettenmeyeri sp. n. (Costa Rica and Panama), Trichoreninus carltoni sp. n. (Belize and Honduras) and T. neo sp. n. (Costa Rica and Panama).  Identification keys for the Central American species of both genera are prepared.  Available host records for N. rettenmeyeri confirm the symbiosis of the genus with Eciton army ants: the species has been found in colonies of E. burchelli (Westwood), E. hamatum (Fabricius) and E. mexicanum Roger.  Host records are not available for the new species of Trichoreninus as all known specimens were collected by flight intercept traps.
Elachistelmis gen. n. (Coleoptera: Elmidae: Elminae) from Suriname, with description of two new species
Authors: MAIER CRYSTAL A.
Published: April 2019

Elachistelmis gen. n. is described for two new species of riffle beetle, E. tetramera sp. n., and E. sipaliwiniensis sp. n. from southwestern Suriname. This new genus can be distinguished from all other elmid genera by its small size (ca. 1.0–1.2 mm), pronotum with sublateral carinae and lacking depressions, and the presence of a narrow band of plastron setae on the lateral edge of each elytron. Elachistelmis tetramera sp. n. is among the smallest recorded Elmini and possesses many characters associated with miniaturization, such as reduced tarsal formula and feathery wings with reduced venation. A key to species, scanning electron micrographs, and illustrations of the male genitalia are provided.
Paralobella palustris sp. nov. (Collembola: Neanuridae: Neanurinae) from China, with remarks and key to species of the genus
Authors: JIANG JIGANG , LUAN YUNXIA , YIN WENYING
Published: April 2019

The genus Paralobella is reported from mainland China for the first time by a new species, Paralobella palustris, described here. Paralobella palustris sp. nov. differs from all known members of the genus in the specific character of 20 teeth on mandible, 4 teeth and 2 hooks on maxilla, 5 chaetae (4+s) on each tubercle L of Abd. II–III, 8 chaetae (7+s) on tubercle L of Abd. IV. The new species is assigned to Paralobella because most characters comply with the diagnosis of the genus given by Cassagnau and Deharveng (1984). It is proposed that the generic diagnosis is slightly modified to take into account some additional characters, such as mandible with many teeth (more than 3 main), the tubercle De on Abd. V separated from tubercle Dl and tubercle Oc with 1 or 2 chaetae. The above mentioned characters broaden the previous diagnosis. This diagnosis allows for including 7 species, i.e., Lobella (Lobella) apsala Yosii, 1976, L.(Lobella) erawan Yosii, 1976, L.(Lobellina) paraperfusa (Gapud, 1968), L. (Lobellina) penangensis Yosii, 1976, L.(Lobellina) sabahna Yoshii, 1981 and L.(Lobellina) selangorica Yosii, 1976 and L. (Propeanura) kinabaluensis Yoshii, 1981 into the genus Paralobella.
Two new species of Ptychopteridae and Trichoceridae from the Middle Jurassic of northeastern China (Insecta: Diptera: Nematocera)
Authors: LIU LUXI , SHIH CHUNGKUN , REN DONG
Published: April 2019

Two new species of Diptera, Eoptychopterina postica sp. nov. in Ptychopteridae and Eotrichocera (Archaeotrichocera) spatiosa sp. nov. in Trichoceridae are described and illustrated from the Middle Jurassic Jiulongshan Formation of Daohugou in eastern Inner Mongolia, China. These two new species are established based on fossil specimens with bodies and complete wings.
Erratum: MIGUEL A. MONNÉ & MARCELA L. MONNÉ (2012) New species of Acanthocinini from South America (Coleoptera: Cerambycidae). Zootaxa, 3478, 192–200.
Authors: MONNÉ MIGUEL A. , MONNÉ MARCELA L.
Published: April 2019

(Erratum)
Review of seasonal polyphenism in the Symphyta (Hymenoptera), exemplified by Pristiphora leucopus (Hellén, 1948) (Tenthredinidae)
Authors: GREARSON K. JOHN , LISTON ANDREW D.
Published: April 2019

Morphological differences between the adults of overwintering and non-overwintering generations of the sawfly Pristiphora leucopus (Nematinae) are described and illustrated, as well as characters that distinguish P. leucopus from the closely similar P. armata. In the basal hymenopteran lineages (‘Symphyta’), seasonal polyphenism is so far only definitely recorded in the Sterictiphorinae (Argidae) and Nematinae (Tenthredinidae) of the Tenthredinoidea. Within the Nematinae, seasonal polyphenism had previously only been described in Nematus bergmanni. Seasonal polyphenism in the basal hymenopteran lineages is reviewed, and the potential pitfall that the existence of seasonal morphs represents for taxonomists working on ‘Symphyta’ is highlighted. Voltinism patterns in the basal hymenopteran lineages are also reviewed, to indicate the likelihood of further undetected examples of seasonal polyphenism in the families and subfamilies. With rare exceptions, multivoltinism occurs mainly in the Tenthredinoidea and is most frequent in the Argidae and Tenthredinidae (particularly Allantinae, Blennocampinae and Nematinae).
Nesodiprion orientalis sp. nov., N. japonicus, and N. biremis, with a key to species of Nesodiprion (Hymenoptera, Diprionidae)
Authors: HARA HIDEHO , SMITH DAVID R.
Published: April 2019

Nesodiprion japonicus (Marlatt, 1898), the type species of Nesodiprion, from Japan, Korea, and Taiwan, and N. biremis (Konow, 1899) from China are redescribed based on their type specimens. Lectotypes are designated for both. Nesodiprion orientalis Hara & Smith, sp. nov. is described from Thailand and Yunnan Province, China. Larvae of all three species feed on Pinus. Generic characters of Nesodiprion are discussed, and a provisional key to species of the genus is given.
Additions to the taxonomy of the armadillo ants (Hymenoptera, Formicidae, Tatuidris)
Authors: DONOSO DAVID A.
Published: April 2019

The taxonomy of the rare ant genus Tatuidris is revised by studying morphological variability among 118 specimens from 52 collection events in 11 countries, and sequences of Cytochrome Oxidase 1 (CO1 ‘DNA barcodes’) of 28 specimens from 13 localities in 6 countries. Tatuidris are cryptic ants that inhabit the leaf litter of Neotropical forests from Mexico to French Guiana, central Brazil, and Peru. Based on the extent of the morphological variability encountered throughout this broad geographic range, T. kapasi is relegated to junior synonymy under T. tatusia. Analysis of barcodes indicated a pattern of genetic isolation by distance, suggesting the presence of a single species undergoing allopatric differentiation. The genus Tatuidris, thus, remains monotypic. Male and female reproductive castes are described for the first time.