Carpelimus (Trogophloeus) notatus Gildenkov, 2019

Gildenkov, M. Yu., 2019, Five new species of the Genus Carpelimus Leach, 1819 from Thailand and the Philippines (Coleoptera: Staphylinidae: Oxytelinae), Russian Entomological Journal 28 (1), pp. 30-35 : 33-34

Carpelimus (Trogophloeus) notatus Gildenkov , sp.n.

Figs 4 , 12–14 .

MATERIAL. Holotype, ♂ “ Philippines, Palawan central, along Tarabanan river , NE San Rafael, ca 30 m, 7.XII.1995, Kodada & Rigova lgt.” ( MHNG) . Paratypes: 3♂♂, 2 ex. “ Philippines, Palawan central, along Tarabanan river , NE San Rafael, ca 30 m, 7.XII.1995, Kodada & Rigova lgt.” ( MHNG; 1♂ — cMG) ; 2♂♂, 2♀♀, 6 ex. “ Philippines, Luzon: Lagunas, Los Banos , vegetation debris near small river, 28.XI.1995, J. Kodada & B. Rigova lgt.” ( MHNG; 1♂, 1ex. — cMG) .

DESCRIPTION (holotype). Length 2.1 mm. Colouration black, legs and antennae dark brown. Integument slightly shining, body with short, light-coloured hairs.

Head transverse, with a wide base, ratio of its length (from posterior margin of head to anterior margin of clypeus) to maximum width about 19:28. Neck constriction prominent. Eyes large, convex. Temples well-developed, round, eye diameter in dorsal view about 1.5 times as long as temple length. Head widest across eyes ( Fig. 4 ). Head surface with distinct, rather large and dense punctation. Many punctures, especially on vertex, umbilicate, their diameter about equal to that of eye facet. Distances between punctures significantly smaller than puncture diameter, interspaces smooth, slightly shining. Punctures on frons and near antennal insertions much smaller, their diameter more than twice as small as eye facet. Punctures near antennal insertions often fuse into coarsely shagreened surface. Antennae rather long, segments 1–7 very elongate; segments 8–10 slightly elongate; segment 11 elongate, conical ( Fig. 4 ).

Pronotum widest about 2/3 its length from base, then narrowed. Lateral margin smoothly rounded ( Fig. 4 ). Ratio of pronotum length to its maximum width about 23:30. Surface of pronotum with distinct, rather large and dense punctation. Punctation very similar to that on head. Punctures umbilicate, their diameter about equal to that of eye facet. Distances between punctures significantly smaller than puncture diameter, some punctures fused, interspaces smooth, slightly shining. Pronotal disc with 2 pairs of rather prominent, symmetrical depressions and 1 unpaired shallow oval depression along midline near apex. Base of pronotal disc with narrow, crescent-shaped depressions fused to single horseshoe-shaped depression. Central part of disc with longitudinal, oval depressions ( Fig. 4 ).

Ratio of length of elytra to their combined width about 39:43. Scutellum with shallow, round depressions ( Fig. 4 ). Elytra with distinct, rather large and dense punctation. Punctures simple, their diameter about equal to that of eye facet. Distances between punctures significantly smaller than their diameter, interspaces smooth, slightly shining ( Fig. 4 ).

Abdomen delicately shagreened.

Aedeagus of characteristic structure ( Figs 12–13 ).

Female. Sexual dimorphism absent, female morphologically similar to male. Spermatheca of characteristic structure ( Fig. 14 ).

COMPARATIVE REMARKS. The new species is similar in umbilicate punctation of the head and pronotum to the representatives of the subgenus Bucephalinus Koch, 1934 , but the structure of the aedeagus of this species is unusual for Bucephalinus [ Gildenkov, 2015]. It is somewhat similar to a well-known palaearctic species Carpelimus (s. str.) lindrothi (Palm, 1943) , differing in its umbilicate punctation of the head and pronotum, well-developed temples and the structure of the aedeagus.

DISTRIBUTION. Philippines.

ETYMOLOGY. From Latin “notatus ” (pronounced) referring to a characteristic microsculpture of the body surface.

Figures

Figs 1–4. Carpelimus (Trogophloeus) spp., holotypes, males, dorsal view: 1 — C. notumus, sp.n.; 2 — C. vilisus, sp.n.; 3 — C. plenus, sp.n.; 4 — C. notatus, sp.n. Рис. 1–4. Carpelimus (Trogophloeus) spp., голотипы, самцы, сверху: 1 — C. notumus, sp.n.; 2 — C. vilisus, sp.n.; 3 — C. plenus, sp.n.; 4 — C. notatus, sp.n.

Figs 5–14. Genitalia of Carpelimus (Trogophloeus) spp.: 5–7 — C. notumus, sp.n.; 8–9 — C. vilisus, sp.n.; 10–11 — C. plenus, sp.n.; 12–14 — C. notatus, sp.n.; 5, 8, 10, 12 — aedeagus, ventral view (holotypes); 6, 9, 11, 13 — aedeagus, lateral view (holotypes); 7, 14 – spermatheca (paratypes). Scale bar: 0.25 mm. Рис. 5–14. Гениталии Carpelimus (Trogophloeus) spp.: 5–7 — C. notumus, sp.n.; 8–9 — C. vilisus, sp.n.; 10–11 — C. plenus, sp.n.; 12– 14 — C. notatus, sp.n.; 5, 8, 10, 12 — Эдеагус, сниЗу (голотипы); 6, 9, 11, 13 — Эдеагус, сбоку (голотипы); 7, 14 — сперматека (паратипы). МасШтаб: 0.25 mm.