Diestramima major Gorochov, 1998

Zhu, Qi-Di & Shi, Fu-Ming, 2018, Review of the genus Diestramima Storozhenko, 1990 (Orthoptera: Rhaphidophoridae: Aemodogryllinae) from China, Zootaxa 4450 (2), pp. 249-274 : 265-266

Diestramima major Gorochov, 1998 , newly recorded species from China

( Fig. 12 )

Diestramima major Gorochov, 1998 . Entomologicheskoe Obozrenie, 77(1): 87; Kim & Pham, 2014. Zootaxa, 3811(1): 65; Gorochov & Storozhenko, 2015. Zoosystematica Rossica, 24(1): 68; Qin, Wang, Liu & Li, 2016. Zootaxa, 4126(4): 515.

Type specimen: male; type locality: Vietnam; location of type specimen: Zoological Institute , Russian Academy of Sciences, St. Petersburg ( ZIN) .

Description. Male. Body medium-sized. Fastigium verticis narrower than scape of antenna, divided into 2 conical tubercles, bases of tubercles drawn together, apices separated, obtuse, directing forward ( Fig. 12B–C ). Eyes oval, protruding forward; median ocellus oval, located between antennal sockets; lateral ocelli nearly circular, situated on lateral margins of conical tubercles of fastigium verticis ( Fig. 12A–B ). Apical segment of maxillary palp longer than subapical one, apex inflated.

Anterior margin of pronotum rather straight, posterior margin slightly protruding backward; lateral lobe longer than high, anterior and posterior margins straight, ventral margin arc-shaped ( Fig. 12B–C ). Posterior margin of mesonotum protruding backward. Posterior margin of metanotum slightly straight.

Fore coxae with 1 small spine; femora unarmed on ventral surface, internal genicular lobe with 1 small spine, external genicular lobe with 1 long spine; tibiae with 2 inner spines and 2 outer spines on ventral surface, apices with 1 outer spine on dorsal surface and 1 pair of spines on ventral surface, between the paired ventral spines with 1 small spine. Middle femora unarmed on ventral surface, internal and external genicular lobes with 1 long spine respectively; tibiae with 2 inner spines and 2 outer spines on ventral surface, apices with 1 pair of dorsal spines and 1 pair of ventral spines, between the paired ventral spines with 1 small spine. Hind femora with 11–16 inner spines on ventral surface; tibiae with 31–36 inner spines and 33–35 outer spines on dorsal surface, arranged in average, subapices with 1 pair of dorsal spines, apices with 1 pair of dorsal spines and 2 pairs of ventral spines, interiodorsal spine slightly shorter than hind basitarsi; hind basitarsi with 2–3 dorsal spines ( Fig. 12F ).

Posteromedian process of 7th abdominal tergite extremely long and straight, obviously surpassing apex of paraproct, apical area of posteromedian process dichotomous, apex obtuse, slightly inflated ( Fig. 12D–E ). Paraproct rather long, basal half slightly broad, narrowing to apex, apex obtuse, directing dorso-backward ( Fig. 12D ). Epiproct nearly triangular, apex obtuse. Cerci slender, conical, apices acute ( Fig. 12D ).

Female. Unknown.

Coloration. Body brown. Lateral margin of fastigium verticis yellowish-brown, eyes yellow. Flagellum of antenna yellow. Face with 4 longitudinal black stripes, both sides of clypeus with 1 black spot respectively. Apices of all femora black, outer margin of basal half of hind femora with yellowish-brown stripes, spines of hind femora and tibiae black.

Material examined. 2 males, Pinglongshan, Fangchenggang , Guangxi, 28 June, 2015, coll. Dongxiao Zhang.

Measurements (mm). Body: ♂ 28.2–31.0; pronotum: ♂ 7.0–7.2; fore femora: ♂ 18.8–19.2; hind femora: ♂ 32.0–34.0; hind tibiae: ♂ 35.0–40.0; hind basitarsi: ♂ 5.6–6.0.

Distribution. China ( Guangxi); Vietnam.

Figures

FIGURE 12. Diestramima major Gorochov, 1998, A–F. male: A–C. head and pronotum: A. frontal view, B. lateral view, C. dorsal view; D–E. apex of abdomen: D. lateral view, E. dorsal view; F. hind basitarsus in lateral view.