Mimadiestra Storozhenko et Dawwrueng

Storozhenko, Sergey Yu. & Dawwrueng, Pattarawich, 2014, New genus of the tribe Diestramimini (Orthoptera: Rhaphidophoridae) from Thailand, Zootaxa 3765 (3), pp. 288-294 : 290

Genus Mimadiestra Storozhenko et Dawwrueng , gen. nov.

Type species: Mimadiestra biloba Storozhenko et Dawwrueng , sp. nov., here designated.

Description. Body typical for subfamily, medium size for tribe. Eyes normally developed ( Fig. 33 ); rostral tubercles distinctly separated at apex ( Fig. 34 ) and directed forward and slightly down ( Fig. 35 ). Legs long, fore femora 1.8 times longer than pronotal length; first segment of hind tarsi with two small dorsal denticles and enlarged apical denticle ( Fig. 36 ). Posterior margin of male 6th tergite rounded ( Fig. 30 ). Posterior margin of male 7th tergite with two projections, which slightly surpassing the middle of paraprocts ( Fig. 30 ). Both 6th and 7th tergites without mid carina ( Fig. 38 ). Male paraprocts long, finger-like ( Figs 29 , 38 ). Male subgenital plate with weakly sclerotized apex ( Fig. 39 ). Male genitalia with three dorsal and three ventral membranous lobes; dorsal side of genitalia without strongly sclerotized sclerite (epiphallus) or hook-like bristles; dorsolateral lobes narrow, reaching the apex of mid dorsal lobe; mid dorsal lobe narrow, lingua-like; ventrolateral lobes broad and distinctly longer than mid ventral lobe; mid ventral lobe narrow and consists of two almost completely fused lobules ( Figs 31 , 40 ).

Composition. Type species only.

Etymology. The name of new genus is anagram of generic name Diestramima . Gender feminine.

Figures

FIGURES 32 – 40. Mimadiestra biloba sp. nov., male. 32, body, frontal and partly lateral view; 33, the same, lateral view; 34, head, dorsal view; 35, the same, frontal view; 36, inner side of hind tarsus and apical part of hind tibia, lateral view; 37, apex of abdomen, lateral view; 38, the same, dorsal view; 39, the same, ventral view; 40, genitalia, ventral view.

FIGURES 18 – 31. Diestramimini. 18, Diestramima minor, female subgenital plate, ventral view; 19 – 20, Diestramima major: 19, male genitalia, dorsal view; 20, the same, ventral view; 21 – 24, Megadiestramima intermedia: 21, male genitalia, dorsal view; 22, the same, ventral view; 23, apex of male abdomen, dorsal view; 24, the same, lateral view; 25 – 28, Leodiestramima exculta: 25, female subgenital plate, ventral view; 26, male genitalia, dorsal view; 27, the same, ventral view; 28, apex of male abdomen, lateral view; 29 – 31, Mimadiestra biloba sp. nov.: 29, apex of male abdomen, lateral view; 30, the same, dorsal view; 31, male genitalia, ventral view. (Figs 18 – 20, 25 – 28 after Gorochov, 1998; Figs 21 – 24 after Gorochov & Storozhenko, 1992; Figs 29 – 31 original).