Gryllacris (Gryllacris) vittata vittata Walker, 1869

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 : 50

Gryllacris (Gryllacris) vittata vittata Walker, 1869

Figs. 10D , 12J , 16I

Material examined. Holotype (female): Myanmar: Tenasserim—(London BMNH).

Description. Medium sized to large species ( Fig. 10D ). Head: Face ovoid; forehead nearly smooth with scattered impressed dots and shallow transverse riffles; fastigium verticis wider than scapus; ocelli visible, distinct; fastigium frontis separated from fastigium verticis by a transverse suture; subocular furrows present but shallow ( Fig. 12J ).

Tegmen: Radius with two branches, both forked near tip; media anterior fused in basal area with radius; media posterior absent; cubitus anterior forks between basal third and mid-length into two veins, CuA1 and CuA2; cubitus posterior undivided, free throughout; with 4 anal veins, the last incomplete. Legs: Fore coxa with a spine at fore margin.

Coloration. General color brownish, rather dark; head mostly black; pronotum with anterior area black, disc in light area with unclear black ornaments similar as in G. signifera . Face black, with contrasting light compound eyes and ocelli; ventral area of clypeus, base and a medial line of labrum medium brown. Tegmen semi-transparent with a black medial band from behind basal third to tip, forming narrow black extensions on both sides (anteriorly and posteriorly) along the cross veins to about R/RS and CuP; hind wing semi-transparent; main veins brown; crossveins blackish and bordered on both sides by dark bands.

Male unknown.

Female. Seventh abdominal sternite wider than long, shorter than preceding sternites. Subgenital plate as in other species of the genus with wide base and roughly ovoid apical area; basal to central area on both sides with a curved carina that gives the impression as though wider rounded areas were flipped over the more central area, furrowed in midline; in about center with a small extended sclerite; apex bi-triangular with medial excision, surfaces of the angles with rather narrow oval swellings ( Fig. 16I ). Ovipositor long, moderately curved, with faintly approaching margins; tip with a slight pre-apical expansion.

Measurements (1 female).—body w/o wings: 32; pronotum: 8; tegmen: 30.5; tegmen width: 11.3; hind femur: 20; ovipositor: 23 mm; measurements from photos.

Figures

FIGURE 10. Genus Gryllacris: Habitus dorsal view: A–B, G. (P.) ovulicauda sp. nov. male holotype (A) and female paratype (B); C, G. bancana Karny, 1930 male; D, G. v. vittata Walker, 1869 female holotype; E–F, G. s. signifera (Stoll, 1813) male (E) and female (F); G, G. f. fuscifrons Gerstaecker, 1860 male; H–I, G. obscura cambodiae Gorochov, 2007 female (H) and male (I); J, G. sok sp. nov. female holotype. Scales 10 mm.

FIGURE 12. Genus Gryllacris: Face: A, G. (Pardogryllacris) ovulicauda sp. nov. male holotype; B–C, G. obscura cambodiae Gorochov, 2007 male (B) and female (C); D, G. f. fuscifrons Gerstaecker, 1860 female holotype; E, G. s. signifera (Stoll, 1813) male; F, G. sok sp. nov. female holotype; G, G. incornuta sp. nov. male holotype; H, G. bancana Karny, 1930; I, G. o. obscura Brunner, 1888; J, G. v. vittata Walker, 1869 female holotype; K, G. kinabaluensis Griffini, 1915 female; L, G. (P.) longiloba Gorochov & Dawwrueng, 2015 female; M, G. (P.) lineolata menzeli (Karny, 1924) male; N, G. (P.) l. lineolata Serville, 1838 male; O, G. (Gigantogryllacris) bilineata sp. nov. male holotype; P, G.(Gi.) ligulata sp. nov. male holotype.

FIGURE 16. Genus Gryllacris: A–B, G. s. signifera (Stoll, 1813); C–D, G. o. obscura Brunner, 1888; E–F, G. obscura cambodiae Gorochov, 2007; G–H, G. peracca Karny, 1923: holotype of G. kledangensis Karny, 1923 (G) and holotype of G. lombokiana Karny, 1926 (H); I, G. v. vittata Walker, 1869 holotype; J, G. sok sp. nov. holotype; K, G. (Pardogryllacris) ovulicauda sp. nov. paratype; L–M, G. kinabaluensis Griffini, 1915; N–O, G. f. fuscifrons Gerstaecker, 1860 (O, holotype).— Female subgenital plate in ventral (A–C, E, H–I, K–L, N–O), lateral (F, M), oblique lateral (D), and latero-ventral view (G, J).