Brasilodontus itamarajuensis

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 : 160-164

Brasilodontus itamarajuensis de Mello & Campos, n. sp.

Figs. 5 , 6 , 15 , 16

Type specimens. Holotype male, 10 male, 10 female paratypes [ MZSP]; 43 male, 24 female paratypes kept at Departamento de Zoologia, Instituto de Biociências, UNESP—São Paulo State University, Botucatu campus.

Etymology. Toponymic, allusive to the city of Itamaraju, Bahia, Brazil.

Diagnosis. frons and gena dark brown with a light brown sagital band from median ocellus to inferior margin of clypeus; labrum medium brown fading to yellow in the lower extremity (fig. 5D); fore wings stridulatory vein with ca. 77 teeth; subgenital with the posterior margin slightly sinuose (fig. 5I); the apex of pseudepiphallus twisted and truncate, fringe of bristles apical, rows of small denticles absent; copulatory papilla drop-shaped, distinctly depressed, the proximal margin of ventral face broadly invaginated (fig. 15B2).

Description. Male. Head: dark brown (fig. 5A); top of head and occiput dark brown; three ocelli present, the median slightly smaller than lateral ones (fig. 5D); maxillary palpi light brown (fig. 5G); frons and gena dark brown with a light brown sagital band from median ocellus to inferior margin of clypeus, labrum medium brown fading to yellow in the lower extremity (fig. 5D). Thorax: pronotum dark brown (fig. 5C); thoracic sternites as in fig. 5K. Fore wings reaching posterior margin of second abdominal tergite (fig. 5A, F); dorsal field with three harp veins; stridulatory vein with ca. 77 teeth (fig. 16B); lateral field with two parallel veins below angulation. Legs: medium brown except the lighter hind femora (fig. 5L) and dark brown hind tibia; tibia I with only the internal tympanum present (fig. 5J). Abdomen: general color dark brown on dorsum, lighter ventrally; supra-anal plate pale brown, garnished with two whitish lines on distal pigmented area, posterior margin broadly convex (fig. 5H); subgenital plate dark yellow, the posterior margin slightly sinuose (fig. 5I). Phallic Complex (figs. 6D, E, F): pseudepiphallus up-curved (fig. 6F), its main lobe wider at the base (fig. 6D), the apex twisted and truncate, fringe of bristles apical, rows of small denticles absent; pseudepiphallic parameres short, round distally, touching each other; tip of ectophallic fold located anteriorly to the distal margin of pseudepiphallic parameres; ectophallic apodemes rather short and slender. Female: general coloration lighter than the male (fig.5B); copulatory papilla yellowish, drop-shaped, distinctly depressed, the proximal margin of ventral face broadly invaginated (fig. 15B2).

Material examined. 54 male, 34 female and 11 nymphs. Brazil, Bahia, Itamaraju, Parque Nacional Histórico Monte Pascoal (16°45'S 39°32'W), 9–14.vii.2012, F. A. G de Mello & team leg. All specimens preserved in 80% alcohol.

Figures

FIGURE 5. Brasilodontus itamarajuensis 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, dorsal field of fore wings; G — male maxillary palpi; H — male supra-anal plate; I — male subgenital plate; J — male, inner face of fore tibia showing tympanum; K — male, thoracic sternites; L — hind leg; M, N, O — ovipositor dorsal, ventral and lateral, respectively.

FIGURE 6. Brasilodontus itabunensis n. sp. male phallic complex. A— dorsal view, B— ventral view, C— lateral view. Brasilodontus itamarajuensis 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.

FIGURE 16. Males fore wings. A — Brasilodontus itabunensis sp. n.; B — B. itamarajuensis sp. n.; C — B. portosegurensis sp. n.; D — B. mucuriensis; E— Yarrubura nigricephala sp. n.; F — B. riodocensis; G — Xulavuna adenoptera sp. n.