Re-definition and review of the Oriental genus Hexachaetus Chaudoir, 1871 (Coleoptera: Carabidae: Orthogoniini) Author Tian, Mingyi Author Deuve, Thierry text Zootaxa 2016 4169 3 540 554 journal article 10.11646/zootaxa.4169.3.7 faeafa7a-a105-4443-bbc3-2bea598d8cd5 1175-5326 258027 8A1FB454-AC73-4D54-A5CB-D12D6CD82AC6 The vietnamensis species group Diagnostic characteristics. Large sized, antennae extending beyond shoulders of elytra, ligula strongly dilated at apex, 12-setose, elytra slightly and obliquely truncate at apex, inner apical angle small but distinctly denticulate, outer apical angle broad, striae deep, intervals convex; middle tibia not dilated medially in male; fore and middle tarsi much thicker than hind ones; apical tibial spurs short and sword-like. Only one species is contained in this group: Hexachaetus vietnamensis n. sp. from Vietnam.