Xanthogryllacris Karny, 1937

Ingrisch, Sigfrid, 2018, New taxa and records of Gryllacrididae (Orthoptera, Stenopelmatoidea) from South East Asia and New Guinea with a key to the genera, Zootaxa 4510 (1), pp. 1-278 : 90

Xanthogryllacris Karny, 1937

Figs. 29–31

Type species: Gryllacris aurantiaca Brunner von Wattenwyl, 1888

Diagnosis. Fastigium frontis laterally well outlined with slightly elevated rims. Male ninth abdominal tergite in apical area faintly furrowed along midline or with a pair of moderate oval swellings, setose and terminating at apical margin with a pair of short but stout teeth. Hind wings bright yellow or ochre with dark brown bands along cross veins, in some species the dark bands with handles before crossing main veins or running across main veins in full width. The lectotype of X. aurantiaca carries a pair of rather short blunt teeth at apical margin of male ninth abdominal tergite.

Discussion. Xanthogryllacris is close to Prosopogryllacris The species of the latter genus with colored hind wings look almost the same as species Xanthogryllacris . A distinct difference is the shape of the projections of the male ninth abdominal tergite. These are tooth-like, short and stout in Xanthogryllacris but thin, stylus like and often curved in Prosopogryllacris . In the mean, Xanthogryllacris includes more robust species, but there is no general difference concerning size between both genera. There is also some similarity to Caustogryllacris and Lyperogryllacris . The differences between all of these genera should be worked out in more detail and require additional studies.

Figures

FIGURE 29. Genus Xanthogryllacris: A–B, X. punctipennis aurantiaca (Brunner, 1888) male lectotype; C–E, X. lineata sp. nov. female holotype; F–H, X. punctata sp. nov. male holotype.—Habitus dorsal view (A, D, F), habitus lateral view (C), face (B, E, G), stridulatory pegs on second and third abdominal tergites, front is right (H). Scales 10 mm.

FIGURE 30. Genus Xanthogryllacris: A–C, X. punctipennis aurantiaca (Brunner, 1888) male lectotype; D–F, X. punctata sp. nov. holotype; G–H, X. inquinata (Karny, 1928) comb. nov. holotype; I–J, X. lineata sp. nov. holotype.—Male abdominal apex in ventral (A, E) and apical view (B, D, G), apical teeth of ninth abdominal tergite in higher magnification (C, F, H); female end of abdomen with seventh sternite, subgenital plate and base of ovipositor in ventral view conserved in alcohol (H) and after desiccation (I).

FIGURE 31. Genus Xanthogryllacris: A–C, X. p. ralum sp. nov. male holotype (A–B) and female paratype (C); D–F, X. p. dempwolffi (Griffini, 1909) female holotype (D), female from New Britain (E–F); G–H, X. p. keyica (Karny, 1925) male; I–J, X. p. subrecta sp. nov. female holotype.—Male abdominal apex in apical (A, G) and ventral view (B, H), female seventh abdominal sternite and subgenital plate (C–E, I), female ovipositor (F, J).