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 Hexachaetus lateralis lateralis (Guérin), 1843 ( Figure 1 ) Orthogonius lateralis : Guérin, in Delessert, 1843 : 35 Hexachaetus lateralis (Guérin) : Chaudoir, 1871 : 125 ; Csiki, 1932 : 1592 Length: 17.0–18.0 mm; width: 7.0 mm. Habitus as in Fig. 1 . Diagnosis. Large sized; head, pronotum, underside of head, metepimeron, tibiae and tarsi of legs, antennae and margins of elytra dark brown, majority part of elytra, underside, femora and coxae of legs, palps yellowish brown; elytral marking from base to apex along suture, anchoreaform, widest at base, then gradually contracted backwards, wider at middle, then trapped towards apex; strongly shiny, glabrous on disc, without wrinkle or puncture, palps normally subcylindrical, ligula wide, 6-setose; antennae short, extending only at shoulders of elytra; pronotum with lateral expanded margin glabrous and smooth, border unclear, slightly reflexed; elytra elongate-ovate, apex concavely truncated, outer angle distinct; elytral intervals 3 with two setiferous pores, located near base (close to stria 3) and subapex (closed to stria 2) respectively; fore tibia stout, outer apical angle distinct, somewhat rectangular; hind tibial spurs long and sharp, claws pectinate, hind tarsomere 4 bilobed; prosternal process unbordered at apex, abdominal ventrite VII slightly emarginated in median portion of apical margin in male; male genitalia very similar to that of H. lateralis maindroni ( Figs. 3–4 ). Material. 1 male , “ Sumatra ( Aceh ), Ketambe , Leuser Nat. Park, 450 m , 26. II- 1, III, 1991, Bocák & Bocáková leg.”, in NHMB ; 1 female , “ Malacca , Coll. Castelnau”, “ Museo Civico di Genova ”, “ Hexachaetus lateralis Guérin, H. E. Andrewes det.”, in MCG ; 1 female, “Collection P. Dupuis”, “ Hexachaetus lateralis Det. P. Dupuis, 1914 ”, in IRSNB. Distribution. Malaysia and Indonesia ( Fig. 20 a).