Hexachaetus lateralis maindroni Tian et Deuve, 2006

Tian, Mingyi & Deuve, Thierry, 2016, Re-definition and review of the Oriental genus Hexachaetus Chaudoir, 1871 (Coleoptera: Carabidae: Orthogoniini), Zootaxa 4169 (3), pp. 540-554 : 543

Hexachaetus lateralis maindroni Tian et Deuve, 2006 , n. stat.

( Figures 2–4 )

Hexachaetus maindroni Tian & Deuve, 2006: 149

Length: 19.0 mm; width: 8.0 mm. Habitus as in Fig. 2 .

Diagnosis. Large sized, polish, glabrous and shiny species; head, pronotum, side margin of elytra, whole apical margin of abdominal ventrite VII, tibiae and tarsi of legs dark brown, underside, femora and coxae yellowish brown; elytral marking narrow, not anchoreaform; labial palpomere 3 glabrous, slightly shorter than palpomere 2; labial palpomere 2 bisetose on inner margin, and with two more shorter setae near apex; maxillary palpomere 3 longer than 4; the median lobe of aedeagus stout, dramatically constricted at apex in profile; lamella broadly and extraordinary dilated in lateral aspect ( Figs. 3–4 ).

Remarks. Similar to H. lateralis lateralis not only on appearance, but also on genital structure. However, it is slightly larger than H. lateralis , elytra marking narrower at middle, extending only to intervals 2 (to intervals 3 in H. lateralis ), and inner apical angle of elytra blunter than in H. lateralis lateralis .

Material. 1 male, the holotype, “ Borneo , Sarawak, Kuching ”, “ 16 Oct. 1894 ”, “ Hexachaetus maindroni n. sp. det. Tian & Deuve, 2004 ”, “ Hexachaetus laeviceps M.”(det. Maindron M.), “ Museum Paris ”, and “ Ex Coll. M. Maindron”, in MNHN.

Distribution. Malaysia ( Fig. 20 b).

Figures

FIGURE 20. Distribution of Hexachaetus species (square: angulatus species group; round: lateralis species group; star: laevissimus species group; heart: vietnamensis species group; triangle: mulan species group; a. H. lateralis lateralis; b. H. lateralis maindroni; c. H. maculatus; d. H. kirschenhoferi n. sp.; e. H. brunki n. sp.; f. H. laevissimus; g. H. vietnamensis n. sp.; h. H. prodigus; i. H. mulan n. sp.)

FIGURES 1 – 4. Hexachaetus lateralis Guérin (1. H. lateralis lateralis Guérin, habitus, male (photo: E. Kirschhofer); 2. H. lateralis maindroni Tian et Deuve, habitus, male, holotype; 3. Median lobe of aedeagus of H. lateralis maindroni, lateral view; 4. ibid. apical lamella, dorsal view; Scale bar: 5.0 mm)