Apotrechus

Bian, Xun, Wang, Shuai-Yu & Shi, Fu-Ming, 2014, One new species of the Genus Apotrechus (Orthoptera: Gryllacrididae), with provided morphological photographs for five Chinese species, Zootaxa 3884 (4), pp. 379-386 : 379-380

Key to the known Chinese species of Apotrechus

1 Frons with broad transverse sulcus.............................................. A. parvospinus ( Liu & Yin, 2002)

– Frons smooth, without broad transverse sulcus.............................................................. 2

2 Apices of fore and middle femora with black ring-like stripes................................................... 3

– Apices of fore and middle femora without black stripes........................................................ 5

3 Frons with 1 longitudinal mark in middle ( Figs. 3 A, 6A); posterior margin of female subgenital plate rounded............ 4

– Frons without mark in middle ( Fig. 4 A); posterior margin of female subgenital plate truncate..........................

........................................................................ A. nigrigeniculatus Liu & Yin, 2002 4 Frons with 1 black mark in middle; pronotum and abdominal tergites with 1 black stripe in middle; lateral lobes of male sub- genital plate with 1 apical process ( Figs. 6 G, F); female subgenital plate longer than wide, lateral margin triangular expanded in middle, posterior margin slightly projecting in middle................................. A. trilobus Bian & shi sp. nov. – Frons with 1 brown spot in middle; pronotum and abdominal tergites with 1 black brown stripe in middle; lateral lobes of male subgenital plate with obtusely rounded apex; female subgenital plate length equal to wide......... A. fallax Liu & Bi, 2008

5 Ovipositor with well-developed digitate lateral lobes at base of lower sheaths......................................6

– Ovipositor without digitate lateral lobes at base of lower sheaths........................... A. digitatus Liu & Bi, 2008

6 Posterior margin of female subgenital plate rounded..................................... A. bilobus Guo & Shi, 2012

– Posterior margin of female subgenital plate truncate................................... A. transversa Liu & Bi, 2010

Figures

FIGURE 3. Apotrechus fallax Liu & Bi, 2008, collected from Lianhuaping, Leishan, Guizhou: A, H. head in frontal view; B – C, I – J. head and prnotum: B, I. dorsal view, C, J. lateral view; D – F, K. apex of abdomen: D. dorsal view, E, K. lateral view, F. apico-ventral view; G, L. subgenital plate in ventral view; A – G. male; H – L. female.

FIGURE 4. Apotrechus nigrigeniculatus Liu & Yin, 2002, collected from Emeishan, Sichuan: A, H. head in frontal view; B – C, I – J. head and pronotum: B, I. dorsal view, C, J. lateral view; D – E, K. apex of abdomen: D. dorsal view, E, K. lateral view; F. genitalia in dorsal view; G, L. subgenital plate in ventral view; A – G. male; H – L. female.

FIGURE 6. Apotrechus trilobus Bian & Shi sp. nov.: A, H. head in frontal view; B – C, I – J. head and pronotum: B, I. dorsal view, C, J. lateral view; D – F, K. apex of abdomen: D. dorsal view, E, K. lateral view, F. apico-lateral view; G, L. subgenital plate in ventral view; A – G. male, holotype; H – L. female, paratype.