Pseudiastata brasiliensis Costa Lima (IOC 1937
Creators: name: Costa, Sávio Cunha
name: Pirani, Gabriela
name: Oliveira, Sarah Siqueira
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Drosophilidae
Pseudiastata
Pseudiastata brasiliensis

description: Pseudiastata brasiliensis Costa Lima, 1937
(Fig. 1a–d; Fig. 2a–c)
Pseudiastata brasiliensis Costa Lima, 1937: 179. Brazil. ST B IOC, “Serviço de Defesa Sanitária Vegetal”.
Material examined: Type material. Lectotype designation. We here designate as lectotype the male syntype: 2836/ Def. San. Veg. 3882/ Síntipo/ CEIOC 77010. The other 14 syntypes, following the original description of Costa Lima (1937), are designated as paralectotypes. We analyzed nine specimens from the type series. The lectotype and eight paralectotypes are housed at the Coleção Entomológica do Instituto Oswaldo Cruz, Rio de Janeiro, Brazil. The other six paralectotypes are housed at the Serviço de Defesa Sanitária Vegetal and were not examined.
Additional examined material: 1♂ and 2♀ Brasil: MT: Poconé/ Fazenda Rio Clarinho/ Antiga Transpantaneira/-16.5913° -56.7325°/ Malaise 53/ 19.x.–30. xii.2012 / Lamas, Nihei & eq. cols. (Terminalia of the male in microvial)// 2 ♀ Brasil: MS:Corumbá/ B. E. P. Paratudal/ -19.5698° -57.0190°/ Malaise 01/ 14–29.x.2012 / Lamas, Nihei & eq. cols.// 1♀ Brasil: MS: Corumbá/ B. E. P. Paratudal/-19.5698°-57.0190°/ Malaise 01/ 29.viii–14.ix.2012 / Lamas, Nihei & eq. cols.// 1♀ Brasil, MT: Parque Nacional/ Chapada dos Guimarães/Cachoeira Véu da Noiva/ Mata Ciliar/ -15.4093° -55.8330°/ Malaise 17/ 22.xii.2011 – 22.i.2012 / Lamas, Nihei & eq. cols.// 1♀ Brasil: MS: Corumbá/ B. E. P. Paratudal/-19.5698°-57.0190°/ Malaise 01/ 14–29.vii.2012 / Lamas, Nihei & eq.cols.// 1♀ Brasil, MT, Chapada dos Guimarães-Transição Ciliar/ Cerrado—Trilha Cach. Véu de Noiva/-15.4093°-55.8333°/ Malaise 17/ 09.iii–18.iv.2012 / Lamas, Nihei & eq. cols.// 1♀ Brasil: MS: Porto Murtinho/ Fazenda Retiro Conceição/ Trilha da Espinhadeira/ -21.6832° -57.7784°/ Malaise 31/ 18.iv–15.v.2012 / Lamas, Nihei & eq. cols.// 1♂ Brasil: MS: Corumbá/ B. E. P. Paratudal/-19.5698°-57.0190°/ Malaise 01/ 14–29.viii.2012 / Lamas, Nihei & eq. cols. Terminalia in microvial.// 1♀ Brasil: MS: Corumbá/ B. E. P. Paratudal/-19.5698° -57.0190°/ Malaise 01/ 29.ix.–14.x.2012 / Lamas, Nihei & eq. cols.// 1♀ Ilha dos Búzios/ S. Paulo-Brasil/ 16.x.–4. xi.1963 / Exp. Dep. Zol// 1♀ Brasil: MS: Corumbá/ B. E. P. Paratudal/ -19.5698°-57.0190°/ 30.iv–15.v. 2012 / Lamas, Nihei & eq. cols. Terminalia in microvial// 1♀ Brasil: MT: Parque Nacional/ Chapada dos Guimarães/ Trilha da Pedra (mirante)/ Cerrado— 788m / -15.4060° - 55.8354°/ Malaise 22/ 20.ix–31.x.2012 / Lamas, Nihei & eq. cols. Terminalia in microvial// 1♀ Brasil, MT, Chap. dos Guimarães/Cachoeira Véu de Noiva/-15.4058° -55.8363/ Malaise 36/ 16–22.i.2012 / Lamas, Nihei & eq. cols. Terminalia in microvial// Pseudiastata / Pseudiastata /SP.Capital// 2♀ Brasil, MG, Perdizes/EPDA-Galheiro, céu do cavalo/Malaise 5–23.ix.2020 /RS Capellari & SH Seike leg.// 1♀ Brasil: MT, Parque Nacional/ Chapada dos Guimarães/ Cachoeira Véu da Noiva/ Mata Ciliar/-15.4092°-55.8316°/Malaise 45/ 29.xi.–31.xii.2012 / Lamas, Nihei & eq.cols. Terminalia in microvial.// Deposited in MZUSP.
Diagnosis. Numerous transverse markings through all cells (cells r 2+3 and r 4+5 almost all maculated, except near the edges; r-m=radial-medial crossvein, dm=discal medial cell, and dm-m=discal medial crossvein with some flaws but almost all maculated) (Fig. 1b); in lateral view, epandrium partially lobate on its ventral apices.
Redescription. Head (Fig. 1a–c): wider than thorax. Eye dark red, bare, and large. Antenna: scape light brown, pedicel light brown with setulae; first flagellomere light brown, wider and slightly longer than pedicel; arista micropubescent. Frons with numerous short interfrontal setulae, mostly brown, darker medially; ocellar triangle brown with two ocellar setae, and numerous setulae, arise from the ocellar triangle. Three subequal fronto-orbital seta: two reclinate and one proclinate, the proclinate slightly shorter than the reclinates. Inner vertical setae convergent and slightly smaller than outer vertical seta. Postocellar setae cruciate and about half length of inner vertical seta. Facial carina very narrow, confined to the dorsal portion of face; parafacial and gena light brown; vibrissa fine present, with a row subvibrissal setae. Proboscis: light brown, palpus light yellow with various setulae. Thorax (Fig. 1d): mesonotum entirely dark yellow. Anterior and posterior dorsocentral setae similar in length. Acrostichal setulae not in rows; two prescutellar acrostichals of equal length; scutellum light yellow; apical scutellar seta present, and slightly longer than prescutellar acrostichals; one postpronotal seta and two ventral notopleural setae. Two katepisternal setae of unequal length. Anepisternum with several black marks around the periphery; proepisternal seta present. Legs: homogeneously pale yellow. Foreleg: femur slightly longer than tibia, lateral surface with a row of setulae. Midleg: femur and tibia approximately equal in length. Hind leg: femur longer than tibia. All tibia with a preapical dorsal seta, cuneiform setation present. Wing (Fig. 1b): numerous transverse markings through all cells (cells r 2+3 and r 4+5 almost all maculated, except near the edges, r-m= radial–medial crossvein, dm=discal-medial cell, and dm-m= discal medial crossvein with some flaws but almost all maculate). Sc faint, incomplete. Costa ending at R 4+5, heavy marginal setation in basal 0.2–0.3 of third costal section (between R 2+3 and R 4+5). R 2+3 and R 4+5 parallel; R 4+5 ending at wing tip. Halter: light yellow. Abdomen: tergites I–II completely dark yellow and remaining tergites grey pruinescent. Male terminalia (Fig. 2a–b): epandrial complex square, with an inverted U-shape, wider than long, almost entirely covered with microtrichia; surstylus fused to epandrium, with strong setae at apex; cercus broad, almost covering epandrium entirely. Phallus membranous, indistinguishable; postgonite narrow, pointed, margins almost touching at apex. Hypandrium partially Y-shaped; pregonites with two setae at apex.
Female. External morphology similar to male. Terminalia (Fig. 2c): epiproct and hypoproct entirely covered with microtrichia; cercus long and covered with setae.
Remarks. The species is here redescribed to complement Costa Lima’s (1937) original description and Hardy’s (1959) subsequent description in his taxonomic revision. We added detailed photographs and an illustration of the female terminalia, as well as a standardization of the morphological terminology for the species of the genus. Additionally, with the study of the type material, we here designate a male deposited in the IOC collection as the lectotype (Fig. 1) and the remaining 14 specimens of the type series (see Costa Lima 1937) as paralectotypes.
Geographic distribution in Brazil (Table 2): Mato Grosso (new record), Mato Grosso do Sul (new record), Minas Gerais (new record), Pernambuco, Rio de Janeiro, and São Paulo (new record).
description: Published as part of Costa, Sávio Cunha, Pirani, Gabriela & Oliveira, Sarah Siqueira, 2022, On the uncommon genera Pseudiastata Coquillett and Hyalistata Wheeler (Diptera: Drosophilidae: Steganinae): new species and additional records from the Neotropical Region, pp. 334-350 in Zootaxa 5116 (3) on pages 336-339, DOI: 10.11646/zootaxa.5116.3.2, http://zenodo.org/record/6372122