Coleolissus cognatus, Kataev & Wrase, 2023

Kataev, Boris M. & Wrase, David W., 2023, Three new brachypterous species of the genus Coleolissus (Coleoptera: Carabidae) from China and India, Zootaxa 5227 (2), pp. 279-289 : 282-284

Coleolissus cognatus sp. n.

( Figs 4 , 9, 10, 16–18 , 29 )

Type material. Holotype: male, “ China, Yunnan Province / Wuliangshan Mt. Range / 24°45′02″N 100°30′24″E / H= 2270 m, 12.06.2011 / Belousov, Kabak, Korolev lg.” ( ZIN).

Description. Morphological character states are similar to those as described for T. curtus sp. n., but restricted or differing as follows.

Body slightly larger: length 8.7 mm, width 3.9 mm. Habitus as in Fig. 4 .

Body black, elytral epipleurae blackish brown, tibiae not infuscate.

Head (HWmax/PWmax 0.57, HWmin/PWmax 0.46) with slightly more convex eyes (HWmax/HWmin 1.17– 1.22), with a few micropunctures on frons laterally. Tempora shorter and flatter. Fronto-clypeal suture slightly impressed, straight. Dorsal microsculpture very fine, consisting of more or less isodiametric obliterated meshes.

Pronotum slightly wider (PWmax/PL 1.58), less strongly narrowed basally (PWmax/PWmin-ap 1.66, PWmax/ PWmin-bas 1.17), widest behind the middle.Apical margin more deeply emarginate and apical angles more markedly protruding. Basal margin very shallowly concave in middle portion, much longer than apical margin (PWmin-bas/ PWmin-ap 1.42), bordered along entire length. Disc less convex, lateral depressions beginning from lateral pores, laterobasal depressions slightly deeper and more densely punctate.

Elytra less convex, rather wide (EL/EW 1.39, EL/PL 2.56, EW/PWmax 1.16. Sutural angle slightly blunted at tip. Intervals slightly flatter. Parascutellar (abbreviate) striole moderately long, its apical part connected with stria 1. Interval 3 with a series of 6 (on left elytron) and 7 (on right elytron) very small discal setigerous pores adjoining stria 2. Marginal umbilicate series consisting of 8–9 setigerous pores in anterior row and of 13–14 pores in posterior row.

Metafemora with two or three short setae on anterior margin. Metatarsomere 1 about as long as metatarsomeres 2–3 combined.

Last visible abdominal sternite (VII) subtruncate at apex (in male); inner pair of setae not distant from margin.

Aedeagus ( Figs. 9, 10, 16–18 ): apex of median lobe in lateral view ( Fig. 9 ) slightly more dorsally bent; terminal lamella in dorsal view narrower, slightly concave at sides. Internal sac with larger spiny patches.

Female: unknown

Etymology. The specific name is a Latin adjective meaning “relative” and referring to the similarity of the new species to C. curtus sp. n.

Comparison. This new species is very similar and apparently closely related to C. curtus sp. n., but markedly distinguished from it by having a larger and flatter body, with the pronotum widest behind the middle, and the aedeagus with a narrower terminal lamella and with larger spiny patches in the internal sac. Other distinctive characters of the new species are listed in the description.

Distribution. Known only from the type locality (Wuliangshan Mountain Range), Yunnan, China ( Fig. 29 ). The holotype has been collected at altitude of 2270 m.

Figures

FIGURE 29. Distribution of Coleolissus spp.

FIGURES 1–4. Coleolissus spp., habitus. 1–3, C. curtus sp. n. (1, male, paratype from “31 km E Luxi.”; 2, male, holotype; 3, female, paratype from Tengchong); 4, C. cognatus sp. n. (male, holotype). Scale bars = 5.0 mm.

FIGURES 5–21. Coleolissus spp., male genitalia. 5–8, 13–15, C. curtus sp. n. (5, 6, holotype; 7, 8, 13–15, paratypes from “31 km E Luxi.”); 9, 10, 16–18, C. cognatus sp. n. (holotype); 11, 12, 19–21, C. brevis sp. n. (holotype). 5, 7, 9, 11, apex of median lobe of aedeagus; 6, 8, 10, 12, 13, 16, 19, median lobe; 14, 17, 20, right paramere; 15, 18, 21, left paramere. Left lateral (5–12, 14, 17, 20), dorsal (13, 16, 19), and right lateral (15, 18, 21) views. Scale bars: A = 0.5 mm (5, 7, 9, 11), B = 1.0 mm (6, 8, 10, 12, 13–21).