Tychius bajtenovi, Caldara, 1986

Jiang, Chunyan, Caldara, Roberto & Zhang, Runzhi, 2020, The genus Tychius Germar (Coleoptera: Curculionidae: Curculioninae) in China, with description of three new species, Zootaxa 4856 (1), pp. 1-62 : 33

Tychius bajtenovi group

Remarks. This group is characterized by a peculiar character, unique in the genus: male pygidium without transverse ridge ( Fig. 122 ). Otherwise it should be related to the T. morawitzi group ( Fig. 121 ) as suggested by the shape of the genitalia (especially in the female). It clearly differs from this group by the seven segments of the antennal funicle cylindrical and lacking broad scales and the absence of seta-like scales on pronotum and elytra. All the species probably feed on Hedysarum .

Figures

FIGURES 121–124. Male pygidium and female ventrite 5 of Tychius. Male pygidium:121. T. morawitzi group; 122. T. bajtenovi group. Female ventrite 5: 123. T. kaszabi; 124. T. crassifemoris.