Carpelimus (Trogophloeus) mustangiensis, Gildenkov, 2019

Gildenkov, M. Yu., 2019, Seven new species of the genus Carpelimus Leach, 1819 from the “ taprobanae ” group (Coleoptera: Staphylinidae: Oxytelinae), Russian Entomological Journal 28 (2), pp. 138-145 : 144-145

Carpelimus (Trogophloeus) mustangiensis

Gildenkov, sp.n.

Figs 23–25 .

MATERIAL. Holotype, ♂ “ Nepal 435 Mustang Distr. , right banks of Lethe Khola near Lethe, 2400m, 5–7.V.1995 MARTENS & SCHAWALLER” ( SMNS).

DESCRIPTION (holotype).

Length 2.2 mm. Colouration dark, legs and antennae brown, antennal segments 12 and 11, tarsi, tibial bases and apices light brown. Integument slightly shining, body with short, light-coloured hairs.

Head transverse, with wide base, ratio of its length (from posterior margin of head to anterior margin of clypeus) to maximum width about 18:25. Neck constriction prominent. Eyes rather large, slightly convex. Temples well-developed, round, eye diameter in dorsal view markedly longer, but less than 1.5 times as long as temple length. Head about as wide across eyes as across temples ( Fig. 23 ). Head surface densely and coarsely shagreened; fine, dense punctation barely discernible only on vertex. Antennae rather short, antennal segments 1–3 elongate; segments 4–5 about as wide as long; segments 6–7 slightly transverse; segments 8–10 transverse; segment 11 elongate, conical. Last 3 segments more massive than others and form loose club ( Fig. 23 ).

Pronotum widest about 2/3 its length from base, then narrowed.Lateral margin slightly notched at base, then broadly rounded ( Fig. 23 ). Ratio of pronotum length to its maximum width about 21:28. Surface of pronotum densely and coarsely shagreened. Base of pronotal disc with barely discernible, symmetrical, round depressions ( Fig. 23 ).

Ratio of length of elytra to their combined width about 33:38. Scutellum with shallow, round depressions ( Fig. 23 ). Surface of elytra with rather distinct, fine and dense punctation. Puncture diameter about equal to diameter of eye facet. Distances between punctures significantly smaller than their diameter, interspaces smooth, slightly shining.

Abdomen delicately shagreened.

Aedeagus of characteristic structure ( Figs 24–25 ).

Female unknown.

COMPARATIVE REMARKS. The new species is most similar in size, colouration and in coarsely shagreened surface of the head and pronotum to a closely related species, C. khasiensis sp.n. and is clearly distinguished by the structure of the aedeagus ( Figs 18–19 , 24–25 ).

DISTRIBUTION. Nepal.

ETYMOLOGY. Named for its geographical distribution.

25

Acknowledgements. The author wishes to thank all colleagues for making material available for study: Alfred Newton, Margaret Thayer and James Boone (FMNH); György Makranczy (HNHM); Giulio Cuccodoro (MHNG); Harald Schillhammer (NHMW); Wolfgang Schawaller (SMNS). I also thank Kirill Makarov for taking the photographs (Moscow Pedagogical State University, Russia).

Figures

Figs 23–25. Carpelimus (Trogophloeus) mustangiensis, sp.n., holotype, male: 23 — habitus, dorsal view; 24 — aedeagus, ventral view; 25 — aedeagus, lateral view. Scale bar: 0.25 mm. Рис. 23–25. (Trogophloeus) mustangiensis, sp.n.,, sp.n., голотип, самец: 23 — габитус, сверху; 24 — Эдеагус, сниЗу; 25 — Эдеагус, сбоку. МасШтаб: 0.25 mm.

Figs 7–22. Genitalia of Carpelimus (Trogophloeus) spp.: 7–8 — C. cachariensis sp.n.; 9–11— C. finelypunctus sp.n.; 12–14 — C. hoaensis sp.n.; 15–17 — C. keraliensis sp.n.; 18–19 — C. khasiensis sp.n.; 20–22 — C. madrasiensis sp.n.; 7, 9, 12, 15, 18, 20 — aedeagus, ventral view (holotypes); 8, 10, 13, 16, 19, 21 — aedeagus, lateral view (holotypes); 11, 14, 17, 22 — spermatheca (paratypes). Scale bar: 0.25 mm. Рис. 7–22. Гениталии Carpelimus (Trogophloeus) spp.: 7–8 — C. cachariensis sp.n.; 9–11— C. finelypunctus sp.n.; 12–14 — C. hoaensis sp.n.; 15–17 — C. keraliensis sp.n.; 18–19 — C. khasiensis sp.n.; 20–22 — C. madrasiensis sp.n.; 7, 9, 12, 15, 18, 20 — Эдеагус, сниЗу (голотипы); 8, 10, 13, 16, 19, 21 — Эдеагус, сбоку (голотипы); 11, 14, 17, 22 — сперматека (паратипы). МасШтаб: 0.25 mm.