Beybienkoana majora, Liu, Hao-Yu & Shi, Fu-Ming, 2012

Liu, Hao-Yu & Shi, Fu-Ming, 2012, A contribution to the taxonomy of the genus Beybienkoana Gorochov (Orthoptera: Gryllidae: Euscyrtinae), Zootaxa 3174, pp. 59-64 : 63

3 Beybienkoana majora sp. nov.

Figs. 15 – 21

Description. Male. Body rather strong. Head rather short ( Fig. 15 ), occiput rather flat. Scapus 1.8 times as wide as frontal rostrum. Eyes oval and distinctly projecting in lateral view. Frontal rostrum long, broad at base, narrowed apically, dorsal side with several short setae. Maxillary palpus short, apical joint widened and sloped at apex; apical joint of labial palpus short and clavate. Pronotum trapeziform, widened posteriorly, dorsal area with impressions, anterior margin slightly emarginated in middle, posterior margin sinuate, anterior angles slightly protruding and posterior angles distinctly protruding in dorsal view; lateral lobes longer than high. Metanotal gland developed, with 2 grooves, anterior one oblong, posterior one nearly round, subequal in size, both covered with short hairs ( Fig. 16 ). Tegmina narrow and short, not reaching apex of abdomen, dorsal field with 6 long and 2 short longitudinal veins and a few transverse veins; lateral field with 5 oblique subcostal veinlets, the second vein branched in middle. Hind wings distinctly long, extending to middle of cerci. Fore tibia slightly swollen at base, external tympanum small and nearly oval ( Fig. 17 ); internal tympanum large and oblong ( Fig. 18 ). Hind tibia with 6 spurs at apex, 3 of which on external side, very short and subequal in length, other 3 on internal side, upper one longest, middle one slightly longer than lower one.

Supra anal plate short, narrowed apically. Subgenital plate long, with lateral margins rolling upward, nearly coniform. Cerci very long, about half length of body. Genitalia ( Figs. 19–21 ): epiphallus long, narrowed apically, apex distinctly bent dorsally and covered with short hairs; epiphallic paramere short, with apex strongly sclerotized, and inner margin of ventral side with long arcuate concave.

Coloration. Body yellow. Head with distinct light yellow longitudinal stripes behind eyes. Lateral margins of disc of pronotum light yellow. Tegmina brown.

Measurements (mm). Male: body 16.0, length with wings 24.5, pronotum 1.4, tegmen 12.5, hind femur 11.5.

Female. Unknown.

Type material. Holotype 3, CHINA, Yunnan, Ruili, Moli, 15.VI.2009, coll. Zai-Hua Yang & Bin Li.

Diagnosis. The new species is related to B. parvula Shi & Liu, 2007 , but differs from the latter by the larger body; eyes oval in lateral view; anterior groove of metanotal gland oblong; inner margin of ventral view of epiphallic paramere with long arcuate concave at apex.

Etymology. The specific name is derived from Latin words “ major ”, referring to its larger sized body.

Figures

FIGURES 15 – 21. Beybienkoana majora sp. nov. 15. head and pronotum, dorsal view; 16. metanotal gland, dorsal view; 17 – 18. fore tibia: 17. outer view; 18. inner view.; 19 – 21. genitalia: 19. dorsal view; 20. ventral view; 21. lateral view. Scale bars = 1 mm.