Asialassus

Nabozhenko, Maxim & Ando, Kiyoshi, 2018, Subtribal, Generic And Subgeneric Composition Of Darkling Beetles Of The Tribe Helopini (Coleoptera: Tenebrionidae) In The Eastern Palaearctic Region, Acta Zoologica Academiae Scientiarum Hungaricae 64 (4), pp. 277-327 : 320

Key to the species of the genus Asialassus based on structures of male

1. Protibiae strongly flattened and bent down apically, without additional processes or teeth ( Fig. 18G ). Mesotibiae with strong and large 10–12 teeth on inner margin ( Fig. 18A ) A. cordicollis

– Protibiae ladle-shaped, bent down at apex, with additional one or two teeth or tooth-shaped process apically ( Figs 21C,D , 22E,F , 23D , 24B,C , 25D,E , 26B,C ). Mesotibiae without teeth or with several very small teeth on inner side near apex 2

2. Protibiae with two acute distinct teeth before apex ( Figs 21C,D , 22E,F , 23D ) A. kimurai

– Protibiae with a rounded or angulate inner process on inner margin ( Figs 24B,C , 25S,E , 26D,C ) 3

3. Mesotibiae almost straight (not thickened at middle, with several small acute teeth on inner margin near apex) ( Fig. 25F ) A. todai labels of the holotype

Figures

Fig. 18. Asialassus cordicollis, details of structure: A = head, ventral view, B = male prosternum, C = male prosternal process, D = female prothorax and fore legs, ventral view, E = female prosternal process, ventral view, F = female prothorax, posterior transverse view (lateral arrows show elevate margin of procoxae, middle arrow shows depressed prosternal process between procoxae), G = male protibia, H = male mesotibia

Fig. 21. Asialassus kimurai, holotype and paratype: A = holotype, male, habitus, B = paratype, female, habitus, C = male protibia, dorsally, D = male protibia, ventrally, E = male mesotibia, F = male prothorax ventro-laterally, G = male prothorax, ventrally, H = aedea-

Fig. 22. Asialassus kimurai, holotype and paratype of the new junior synonym Tarpela tokunoshimana: A = holotype, male, habitus, B = paratype, female, habitus, C = male prothorax, ventrally, D = male prothorax, laterally, E = male protibia, dorsally, F = male protibia, ventrally, G = male mesotibia, dorsally, H = male mesotibia, ventrally, I = labels of the holo-

Fig. 23. Asialassus kimurai, details of structure, male: A = head, ventral view, B = prothorax, ventral view, C = prosternal process, D = protibia, ventrally

Fig. 24. Asialassus tsushimanus, male, holotype: A = habitus, B = protibia, laterally, C = protibia, ventrally, D = mesotibia, E = aedeagus, dorsal view, F = prothorax, ventral view, G =

Fig. 25. Asialassus todai, male, holotype: A = habitus, B = prothorax, ventral view, C = prothorax, lateral view, D = protibia, dorsal view, E = protibia, ventral view, F = mesotibia, G =

Fig. 26. Asialassus adachii, male, holotype: A = habitus, B = protibia dorsally, C = protibia ventrally, D = mesotibia, E = prothorax, ventral view, F = prosternal process, lateral view, G = aedeagus, H = labels of the holotype