Bacchisa rigida ( Gressitt, 1942 )

He, Si-Yao, Chen, Li & Liu, Zhi-Ping, 2015, Comparative morphology study of the male genitalia in the tribe Astathini from China (Coleoptera: Cerambycidae), Zoological Systematics 40 (2), pp. 197-211 : 206

3.1.9 Bacchisa rigida ( Gressitt, 1942) ( Figs 5F , 6F, 7G)

Tegmen about 4.0 times as long as wide; lateral lobes short, about 1/14–1/18 times as long as tegmen, sub-cylindrical, about 0.9–1.0 times as long as wide; apex transparent and with little hairs; roof long, about 1.9–2.3 times as long as lateral lobes; apex dehiscent; ringed part converging at apex, apex fishtail. Median lobe plus median struts slightly curved, about 4.4 times as long as wide; median lobes 1.8 times as long as median struts; dorsal plate slightly shorter than ventral plate, apex pointed. Internal sac with rod at apex, rod longer than median lobe plus median struts and a little thicker at apical half. 8th abdominal tergaum sub-trapezoidal, 0.8 times as long as wide; apex round, with dense setae on lateral sides; 8th abdominal sternum slightly shorter than tergaum and as wide as it, apex concave, with dense long setae; spiculum gastrale a little short, about 1.2 times as long as tergaum.

Figures

Fig. 5. Tegmen of Bacchisa, dorsal view. A–F. R2> 1/20. A. B. atritarsis. B. B. basalis. C. B. comate. D. B. dioica. E. B. fortunei. F.B. rigida. G. R2 <1/20, B. guerryi. Scale bar=0.5mm.