Carpelimus (Bucephalinus) kimi Gildenkov

Gildenkov, M. Yu., 2024, New species of the genus Carpelimus Leach, 1819 from Myanmar (Coleoptera: Staphylinidae: Oxytelinae), Russian Entomological Journal 33 (1), pp. 72-75 : 73-74

Carpelimus (Bucephalinus) kimi Gildenkov , sp.n.

Figs 1–5 .

МАТЕRIAL. Holotype, ♂ “ MYANMAR:S part city Yangon, 16º47'09"N 96º08'34"E, 10.10.2021, on small wet green moss, leg. Kim A.Yu. ” ( ZMUM) . Paratypes: 1♂, 2♀♀ “ MYANMAR: S part city Yangon, 16º47'09"N 96º08'34"E, 4.09.2021, on small wet green moss, leg. Kim A.Yu. ” ( cMG) ; 4♂♂, 9 ex. “ MYANMAR: S part city Yangon, 16º47'09"N 96º08'34"E, 10.10.2021, on small wet green moss, leg. Kim A.Yu. ” (cMG; 2 ex. — ZMUM) ; 20 ex. “ MYANMAR: S part city Yangon, 16º47'09"N 96º08'34"E, 25.05.2022, on small wet green moss, leg. Kim A.Yu. ” (cMG; 1 ex. — BNHM; 1 ex. — cMSch; 2 ex. — HNHM; 2 ex. — MHNG; 2 ex. — NHMW; 1 ex. — NKME; 2 ex. — ZIN; 1 ex. — ZMUM) .

DESCRIPTION (holotype). Length 1.3 mm. Body completely black; legs, antennae and mouthparts dark brown. Integument slightly shining, body with short, light-coloured setation.

Head transverse, with wide base, ratio of its length (from posterior margin of head to anterior margin of clypeus) to maximum width about 13:19. Neck constriction well developed. Eyes rather large, convex. Temples well-developed, round, eye diameter in dorsal view about 1.3 times as long as temple length. Head widest across temples ( Fig. 1 ). The surface of the head is evenly shagreened.

Antennae rather short, antennal segment 1 large, conical, about 3 times as long as wide; segment 2 large, conical, about 2 times as long as wide, equal in width to 1st; segment 3 conical, narrow, about 2 times as long as wide; segments 4 – 6 — about as wide as long; segments 7–10 transverse; segment 11 elongate, conical. Last 3 segments more massive than others and form loose club ( Fig. 1 ).

Pronotum maximum broad after about 2/3 its length from base, then narrowed.Lateral margins smoothly rounded ( Fig.1 ). Ratio of pronotum length to its maximum width about 16:20. Surface of pronotum evenly shagreened, like head surface. Pronotal disc with well-developed crescent-shaped depression at the base ( Fig. 1 ).

Length of elytra related to their combined width approximately as 22:26. Elytra with rather distinct, large and dense punctation. Puncture diameter about 1.5 times as long as eye facet. Distances between punctures are much smaller than their diameter, interspaces weakly shagreened.

Abdomen delicately shagreened.

Aedeagus of characteristic structure ( Figs 3, 4 )

Female. Sexual dimorphism absent, female morphologically similar to male. Spermatheca of characteristic structure ( Fig. 5 ).

COMPARATIVE REMARKS. The new species is closely related to C. (Bucephalinus) nepalicus (Coiffait, 1982) and C. (Bucephalinus) pseudonepalicus Gildenkov, 2013 ( Fig. 2 ), which are similar in size and microsculpture of head and pronotum surface, eyes structure and shape of depression at the base of pronotal disc. The new species is also similar to C. nepalicus in the structure of the spermatheca. It differs from these two species by the much darker colouration and a much more distinct and large punctation of elytra. Reliably differs only by the structure of aedeagus ( Figs 3, 4 ). The new species also differs from C. pseudonepalicus by the structure of spermatheca ( Figs 5, 6 ).

ECOLOGY. Found in spring and autumn on small, damp green moss growing on the base of a building ( Fig. 7 ).

DISTRIBUTION. Myanmar ( Fig. 8 ).

ETYMOLOGY. The new species is named after Alexander Yurievich Kim, an entomologist studying taxonomic group Anthophila, who collected all the material on this species.

Figures

Figs 8. Distribution map C. kimi sp.n. Рис. 8. Карта распространениЯ C. kimi sp.n.

Figs 1–2. Carpelimus spp.: 1 — Carpelimus (Bucephalinus) kimi sp.n., holotype, male, dorsal view; 2 — Carpelimus (Bucephalinus) pseudonepalicus Gildenkov, 2013, paratype, male, dorsal view. Рис. 1–2. Carpelimus spp.:1 — Carpelimus (Bucephalinus) kimi sp.n., голотип, самец, сверху; 2 — Carpelimus (Bucephalinus) pseudonepalicus Gildenkov, 2013, паратип, самец, сверху.

Figs 3–6. Genitalia of Carpelimus: 3−5 -— C. kimi, sp.n.; 6 — C. pseudonepalicus; 3 — aedeagus, ventral view (holotype); 4 — aedeagus, lateral view (holotype); 5, 6 — spermatheca (paratypes). Scale bar: 0.25 mm. Рис. 3–6. Гениталии Carpelimus: 3−5 — C. kimi, sp.n.; 6 — C. pseudonepalicus; 3 — aedeagus, ventral view (holotype); 4 — aedeagus, lateral view (holotype); 5, 6 — spermatheca (paratypes). Масштаб: 0,25 мм.

Fig. 7. Habitat of C. kimi, sp.n. Рис. 7. Место обитаниЯ C. kimi, sp.n.