. Bonn zoological bulletin. Zoology. 134 VolkerAssing. Chengdu Fig. 28. Distributions of Nazeris species in Sichuan: A'^, truncatus (filled star); N. bilamellatus (filled star); N. ruani (filled star: examined record; open star: type locality); N. hailuogoiiensis (filled triangles); (filled circle); jV. appendiculatus (dia- monds); N. piietz! (open triangle). Elytra (Fig. 31) times as long as pronotum and slen- der; humeral angles obsolete; punctation dense, defined, and approximately as coarse as that of pronotum; inter- stices glossy. Hind wings completely reduced. Abdomen 1.
. Bonn zoological bulletin. Zoology. 134 VolkerAssing. Chengdu Fig. 28. Distributions of Nazeris species in Sichuan: A'^, truncatus (filled star); N. bilamellatus (filled star); N. ruani (filled star: examined record; open star: type locality); N. hailuogoiiensis (filled triangles); (filled circle); jV. appendiculatus (dia- monds); N. piietz! (open triangle). Elytra (Fig. 31) times as long as pronotum and slen- der; humeral angles obsolete; punctation dense, defined, and approximately as coarse as that of pronotum; inter- stices glossy. Hind wings completely reduced. Abdomen times as broad as elytra; punctation dense, defined, and rather coarse on anterior tergites, gradually becoming sparser and finer towards posterior tergites, rather sparse and fine on tergite Vll; interstices without microsculpture; posterior margin of tergite Vll without palisade fringe; posterior margin of tergite VIII convex. o: stemite VII unmodified; stemite VllI (Fig. 32) times as broad as long, posterior excision V-shaped and rather small, its depth approximately times the length of stemite; aedeagus (Figs 33-34) slender, mm long; ventral process apically with pair of curved and apically acute horn-shaped processes in ventral view; dorso-later- al apophyses long and slender, apically just reaching apices of ventral process. Comparative notes. As can be inferred from the similar external and male sexual characters, particularly the sim- ilarly derived morphology of the aedeagus, this species is undoubtedly closely allied to A^. bicornis, from which it differs by the slightly denser punctation of the abdomen. the smaller posterior excision of the male stemite VIII, and by the distinctly smaller and differently shaped aedeagus (ventral process basally more slender; apical processes of ventral process shorter and apically less acute; dorso-lat- eral apophyses more slender; intemal structures of differ- ent shape). The aedeagus of A^. bicornis is mm long;
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