Tintiyakus lari Mendes & Heleodoro 2021, sp. nov.
Creators: name: Mendes, Diego Matheus De Mello
name: Heleodoro, Raphael Aquino
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Orthoptera
Anostostomatidae
Tintiyakus
Tintiyakus lari

description: Tintiyakus lari Mendes & Heleodoro sp. nov.
Figures 2A–B, 3A–B.
Diagnosis. Compound eye in frontal view 1.2 times higher than distance of antennal socket to frontal sulcus (Fig. 1C). Male subgenital plate scoop-shaped, with basal margin convex, lateral margin straight, gradually narrowing towards apex; apical margin with conspicuous emargination and small slit medially (Fig. 2D). Female subgenital plate triangular, with lateral margin gradually narrowing towards apex, apical margin thin, slightly rounded (Fig. 3E). Male cercus setose, with anterior half conspicuously widened, posterior half slender, with apical margin straight (Fig. 2D). Styllus bacilliform, gradually widening from base to apex, 5.7 times longer than wide (Fig 2D, E).
Description. Holotype Male.
Head. Fastigium of vertex frontally projecting, subtrapezoidal with apical margin emarginated, thinner than scapus (Fig. A–B). Fastigium of frons inconspicuous. Frons striated under antennal socket, with dark-brown spots (Fig. 2C). Clypeus trapezoidal (Fig. 2C). Labrum symmetrical, sub-trapezoidal (Fig. 2C). Antenna light-brown, with scapus 1.8 times longer than pedicel. Compound eye oval, deep-black, shiny, 1.2 times higher than distance of antennal socket to frontal sulcus (Fig. 2C) Last mandibular palpomere globose, widened, conspicuous (Fig. 2A, C).
Thorax. Shiny, dark-brown, smooth. Pronotum in dorsal view long and wide, dorsally rectangular; lobe of pronotum subtrapezoidal, with dorsal and ventral margin slightly convex (Fig. 2A–B). Mesonotum rectangular in dorsal view, 3.3 times shorter than pronotum, with nearly same length of metanotum (Fig. 2B). Metanotum rectangular (Fig. 2B).
Legs. Fore and mid femur light-yellow, fore and mid tibia black. Fore tibia with two dorsoposterior spines, five ventroanterior and two ventroposterior spines. Mid tibia with three dorsoanterior and four ventroanterior spines. Hind femur with 15 chevron ridges.
Abdomen. Tergites 1-8 rectangular, gradually increasing in length (Fig. 2B). Tergite 9 dome-shaped (Fig. 2E). Tergite 10 subdivided in two, each half diamond-shaped, with small spines at apex (Fig. 2E). Subgenital plate scoop-shaped, with basal margin convex, lateral margin straight, gradually narrowing towards apex; apical margin with conspicuous emargination and small slit medially (Fig. 2D). Cercus setose, with anterior half conspicuously widened, posterior half slender, with apical margin straight (Fig. 2D). Styllus bacilliform, gradually widening from base to apex, 5.7 times longer than wide (Fig 2D, E).
Coloration. Based on photos of preserved specimen: Body general color dark-brown. Eyes black. Antenna lightbrown. Palpi light-yellow. Fore and mid femora dark-yellow. Fore and mid tibia dark-brown with spines dark-yellow. Hind femur light-brown. Hind tibia dark-brown with regions light-brown. Tarsi dark-yellow with spots dark-brown.
Female. Similar to male (Fig 3A–E), except for: Abdomen. Supra anal plate trapezoidal (Fig. 3D). Cercus with homogenous width until abruptly narrowing at apical third, with minute seta (Fig. 3C–E). Subgenital plate triangular, with lateral margin gradually narrowing towards apex, apical margin thin, slightly rounded (Fig. 3E). Ovipositor dark brown, shiny, slender, conspicuously arched, slightly pointed dorsally, with acute apex (Fig. 3F).
Remarks. Tintiyakus lari sp. nov. can be easily distinguished from all other congeneric species by its large eyes, it being the only species with eye depth longer than distance of antennal socket to frontal sulcus. More specifically, the species can be differentiated from Tintiyakus piaroa Derka, Svitok & Fedor, 2016 by the curved, stylus (nearly straight in Tintiyakus lari sp. nov.) and absence of medial slit in the middle of emargination from apical margin of subgenital plate (present in Tintiyakus lari sp. nov.).
From Tintiyakus sexangulus, Tintiyakus lari sp. nov. can be differentiated by the scoop-shaped subgenital plate (hexagonal in Tintiyakus sexangulus) and by the conspicuously emarginated apical margin of subgenital plate (emarginated by a thin slit in Tintiyakus sexangulus).
From Tintiyakus trewicki, the new species can be distinguished by the cercus, which is conspicuously widened at anterior half and slender at posterior half (totally enlarged in Tintiyakus trewicki) as well as by the slender and straight stylus (curved and robust in Tintiyakus trewicki).
Etymology. The species name is a tribute to Larissa L. de Queiroz, best friend of both authors, in recognition to all the blissful and joyful time spent, as well as all hardships we overcame.
Geographical records. Brazil: Roraima (Fig. 4).
Type material. Holotype ♂. BRASIL, Roraima, Caracaraí, Serra da Mocidade, 1.050 m.a, 01°42’N – 61°47’W, 25.i – 06.ii.2016, Pitfall, M. Oliveira, F.F. Xavier, T. Mahlmann leg. (INPA). Paratype ♀: idem (INPA).
Measurements (mm). Holotype ♂: TL: 30,2; WF: 6,4; PL: 7; PH: 6; FF: 10,1; FT: 9; MF: 10,2; MT: 9; HF: 20,5; HT: 20,2; Lplac: 4,3; LC: 3,1. Paratype ♀: TL: 34; WF: 5,4; PL: 7; PH: 6; FF: 9,5; FT: 9; MF: 8; MT: 7; HF: 21,5; HT: 18; Lplac: 1,2; LC: 3; OL: 8.
Natural history notes. Few are known about the natural history of Tintiyakus lari sp. nov., as it was collected during a large faunal inventory of animals and plants, its discovery only happened after screening the material collected in the laboratory. However, it is possible to affirm that T. lari sp. nov. it shares with the other species of the genus the fact that it lives in an environment of mountain Amazonian rainforest, increasing the distribution range of the genus between 200- 1,050 m above sea level.
description: Published as part of Mendes, Diego Matheus De Mello & Heleodoro, Raphael Aquino, 2021, New species of Tintiyakus Cadena-Castañeda (Orthoptera: Anostostomatidae Lutosinae) from the Brazilian Mountain Amazon Rainforest, pp. 478-484 in Zootaxa 5072 (5) on pages 479-483, DOI: 10.11646/zootaxa.5072.5.4, http://zenodo.org/record/5749057