Brasilodontus apterus

Campos, Lucas Denadai De & De Mello, Francisco De A. G., 2014, Taxonomic studies on the Neotropical Landrevinae with description of new taxa (Orthoptera, Grylloidea, Gryllidae), Zootaxa 3852 (2), pp. 151-178 : 164-168

Brasilodontus apterus de Mello & Campos, n. sp.

Figs. 8 , 9 , 15

Type specimens. Holotype male, 7 male, 3 female paratypes [ MZSP]; 8 male, 3 female paratypes kept at Departamento de Zoologia, Instituto de Biociências, UNESP—São Paulo State University, Botucatu campus. Etymology. Allusive to its wingless condition.

Diagnosis. frons with oval dark yellow maculae just below median ocellus (fig. 8D); apterous; tibia I polymorphic for a vestigial/absent internal tympanum; supra-anal plate with posterior margin broadly round (fig. 8H); subgenital plate yellowish at mid-portion, medium brown laterally; pseudepiphallus with apex rounded, fringe of bristles apical, pointing posteriorly (fig. 9F); ectophallic apodeme moderately long; copulatory papilla thin (fig. 15E), anterior margin acute on ventral face (fig. 15E2).

Description. Male. Head: dark brown (fig. 8A); top of the head and occiput dark brown; three same-sized ocelli present (fig. 8D); maxillary palpi light to medium brown (fig. 8G); frons with oval dark yellow maculae just below median ocellus, gena and clypeus medium brown, labrum yellowish (fig.8D). Thorax: pronotum medium brown (fig. 8A); thoracic sternites as in fig. 8K; apterous. Legs: medium brown; tibia I polymorphic for a vestigial/ absent internal tympanum. Abdomen: general color medium brown on dorsum, lighter ventrally; supra-anal plate light to medium brown, with two whitish lines on distal pigmented area, posterior margin broadly round (fig. 8H); subgenital plate yellowish at mid-portion, medium brown laterally, posterior margin concave (fig. 8I). Phallic Complex (figs. 9D, E, F): pseudepiphallus up-curved (fig. 9F), its main lobe wider at base, the apex rounded, fringe of bristles apical, pointing posteriorly (fig. 9F), rows of small denticles located on the outside; pseudepiphallic parameres rounded distally, separated from one another; tip of ectophallic fold located anteriorly to the distal margin of pseudepiphallic parameres; ectophallic apodeme moderately long. Female: general coloration darker than the male (fig. 8B); copulatory papilla yellowish, thin (fig. 15E), anterior margin acute on ventral face (fig. 15E2).

Material examined. 16 male, 6 female and 1 nymph. Brazil, Bahia, Porto Seguro, Estação Ecológica Vera Cruz (16°21'S 39° 9'W), 06.iii.2002, Costa et. al leg. All specimens preserved in 80% alcohol.

Figures

FIGURE 8. Brasilodontus apterus n. sp. A — male, dorsal; B — female, dorsal; C — male, lateral head and pronotum; D — male, frontal view of head; E — male eye, perpendicular view; F — male, fore wings absent; G — male maxillary palpi; H — male supra-anal plate; I — male subgenital plate; J — male, inner face of fore tibia without tympanum; K — male, thoracic sternites; L — hind leg; M, N, O — ovipositor dorsal, ventral and lateral, respectively.

FIGURE 9. Brasilodontus portosegurensis n. sp. male phallic complex. A— dorsal view, B— ventral view, C— lateral view. Brasilodontus apterus n. sp. male phallic complex. D— dorsal view, E— ventral view, F— lateral view. Conventions: M. L. Ps. — main lobe of pseudepiphallus; Ps. P. — pseudepiphallic paramere Ect. F. — ectophallic fold; End. Sc. — endophallic sclerite; Ect. Ap. — ectophallic apodeme; R. — rami.

FIGURE 15. Female copulatory papilla dorsal (1) ventral (2) and lateral (3) views. A — Brasilodontus itabunensis sp. n.; B — B. itamarajuensis sp. n.; C — B. riodocensis; D — B. portosegurensis sp. n.; E — B. apterus sp. n.; F — B. mucuriensis; G — Yarrubura nigricephala sp. n.; H — Xulavuna adenoptera sp. n.