Coleolissus kejvali, Kataev, 2022

Kataev, Boris M., 2022, Notes on carabid beetles of the genera Coleolissus and Siopelus (Coleoptera: Carabidae: Harpalini), with description of four new species with unusual aedeagi from India and China, Zootaxa 5168 (3), pp. 285-305 : 290-291

Coleolissus kejvali sp. n.

( Figs. 9 , 11–14 )

Type material. Holotype: male, “S-India, Kerala St. , nr. Kallar, 30 km NE Trivandrum, 400 m Kallar riv., 29.6.99, 77°05′E, 8°45′N leg. Kejval, Trỳzna”, “coll. S. Facchini Pia Senza / Italy ” (cFCCH).

Description (male). Habitus as in Fig. 9 . Morphological character states are similar to those as described for C. perlucens , but differing as follows.

Body slightly smaller: length 8.1 mm, width 3.3 mm.

Head (HWmax/PWmax 0.67, HWmin/PWmax 0.48), with more convex eyes (HWmax/HWmin 1.29). Labrum very shallowly concave anteriorly. Microsculpture on clypeus, frons and vertex highly obliterated, very fine, more or less isodiametric meshes recognized only under and behind eyes.

Pronotum (PWmax/PL 1.38, PWmax/PWmin-ap 1.54, PWmax/PWmin-bas 1.29, PWmin-bas/PWmin-ap 1.20), with shallower laterobasal depressions; basal foveae more distinct, very narrow, situated at inner margins of laterobasal depressions.

Elytra (EL/EW 1.50, EL/PL 2.54, EW/PWmax 1.22), with subapical sinuation very shallow, but slightly more distinct. Intervals, including lateral ones, impunctate. Interval 3 with a series of 5 (left elytron) and 8 (right elytron) small discal setigerous pores adjoining stria 2 along its entire length. Marginal umbilicate series consisting of 21 (left elytron) and 20 (right elytron) setigerous pores.

Protibia without longitudinal sulcus on dorsal side.

Pro- and metasternum and abdominal sternites almost glabrous, only with a few scattered very fine and short, almost indistinct setae. Apex of last visible sternite (VII) (in male) subtruncate, with one (inner) pair of marginal setae; these setae not distant from margin.

Aedeagus ( Figs. 11–14 ) slenderer, with relatively smaller basal bulb. Median lobe of aedeagus in lateral view ( Fig. 11 ) arcuate on dorsal side, with ventral margin rounded in middle portion and slightly convex in the apical quarter, without apical capitulum; in dorsal view median lobe ( Fig. 12 ) more clearly curved to the right apically; terminal lamella rather wide, wider than long, more widely rounded apically. Apical orifice divided into two parts by narrow oblique sclerified bridge: a larger proximal part in dorsal position and a smaller distal one shifted to the left. Internal sac without sclerotic armature.

Etymology. Named after Zbynĕk Kejval (Domažlice, Czech Republic), a specialist on Anticidae, one of the collectors of the type specimens.

Comparison. Very similar in habitus to C. perlucens , but differs from it in having elytral intervals (including lateral ones) impunctate, protibia not sulcate, abdominal sternites not pubescent, apex of last visible abdominal sternite of male subtruncate, with one pair of marginal setae, median lobe of aedeagus with apical orifice divided into two parts by narrow oblique bridge, without apical capitulum and without spines in internal sac, and in other distinctive characters mentioned in the description. The new species differs from C. nakajimai Ito, 2016 described based on one female from Tamil Nadu and known to me only from the original description at least in its smaller size (body length 8.1 mm versus 12.5 mm), more convex eyes, non-crenulate elytral striae and fully developed wings.

Distribution. Known only from the type locality (Kallar river, 30 km NE of Trivandrum) in Kerala State, India.

Figures

FIGURES 9, 10. Coleolissus, habitus. 9, C. kejvali sp. n. (holotype); 10, C. deformipenis sp. n. (holotype). Scale bar = 1.0 mm.

FIGURES 11–14. Coleolissus kejvali sp. n., male genitalia (holotype). 11, 12, median lobe of aedeagus; 13, left paramere; 14, right paramere. Left lateral (11, 14), dorsal (12) and right lateral (13) views. Scale bar = 0.5 mm.