Yarrubura nigricephala

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 : 174-176

Yarrubura nigricephala de Mello & Campos, n. sp.

Figs. 12 , 13 , 14 , 15 , 16

Type specimens. Holotype male, 5 male, 5 female paratypes [ MZSP]; 5 male, 5 female paratypes [Coleção de Invertebrados do Instituto Nacional de Pesquisas da Amazônia ( INPA)]; 38 male, 56 female kept at Departamento de Zoologia, Instituto de Biociências, UNESP—São Paulo State University, Botucatu campus.

Etymology. Referring to the black color of the head.

Description. Male. Head: mostly black, contrasting with the anterior portion of pronotum, which is reddish (fig. 12A–D); eyes blackish, large, somewhat prominent, circundated by a reddish-brown ring (fig. 12E); top of the head and occiput black (fig. 12C, D); maxillary palpi yellowish brown (fig. 12G); frons dark brown to black; gena medium brown; clypeus as in fig. 12D; labrum yellowish (fig. 12D). Thorax: pronotum covered by bristles, reddish-brown with a thick dark brown band along distal margin ( Fig. 12 A, C); thoracic sternites as in fig. 12K. Fore wings as described for the genus (fig. 12F; 16E). Legs: yellowish to reddish brown (fig. 12A, L), remaining details as for the genus; ( Fig. 12 J). Abdomen: general color dark brown, lighter ventrally; supra-anal plate medium brown, posterior pigmented area with two whitish lines, hind margin broadly round (fig. 12H); subgenital plate light to medium brown, pilose (fig. 12I). Phallic Complex (fig.13A, B, C): as described for the genus. Female: general coloration lighter than the male, except by the head which is similarly blackish; pronotum reddish, without a darker band along hind margin (fig. 12B); ovipositor light yellowish brown, depressed ( Fig. 12 M, N, O); copulatory papilla yellowish, tip of the structure unpigmented, nipple-shaped (fig. 15G).

Material examined. 21 male, 15 female and 15 nymphs. Brazil, Amazonas, Manaus, Reserva Adolpho Ducke (2°57'S 59°57'W), 1–15.vii.2011, F. A. G de Mello & C. F. Sperber leg. All specimens preserved in 80% alcohol.

Figures

FIGURE 12. Yarrubura nigricephala n. gen. 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 13. Yarrubura nigricephala n. gen. male phallic complex. A, A’ — dorsal view, B, B’ — ventral view, C, C’ — 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 14. (A to D, Xulavuna adenoptera n. sp.; E to G, Yarrubura nigricephala, n. sp.). A — male right fore wing, dorsal view (a — dorsal field; b — lateral field); B — right fore wing gland, dorsal view; C — right wing ventral view; D — right fore wing, ventral view of dorsal field; E — male body of Y. nigricephala, n. sp. after wing removal showing abdominal glandular structures (I, II, III — abdominal tergites); F — Glandular structures on abdominal tergite I; G — same, lateral view.

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.