Carpelimus (Bucephalinus) longifilous Gildenkov, 1952

Gildenkov, M. Yu., 2020, Eight new species of the genus Carpelimus Leach, 1819 from Indonesia (Coleoptera: Staphylinidae: Oxytelinae), Russian Entomological Journal 29 (1), pp. 53-60 : 58-59

Carpelimus (Bucephalinus) longifilous Gildenkov , sp.n.

Figs 6 , 22–24 .

MATERIAL. Holotype, ♂ “S Sulawesi Prov., 400 m 20km NE Sabbang 2.28.56 S 120.12.00 E 5.–7.Jul 2001, Bolm lgt.” ( SMNS). Paratypes: 2♂♂, 5♀♀, 3 ex. “S Sulawesi Prov., 400 m 20km NE Sabbang 2.28.56 S 120.12.00 E 5.–7.Jul 2001, Bolm lgt.” ( SMNS; cMG — 1♂, 1 ex.) .

DESCRIPTION (holotype). Length 3.0 mm. Entirely 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 25:38. Neck constriction prominent. Eyes large, convex, occupying almost entire lateral sides of head, temples barely developed ( Fig. 6 ). Head surface with very delicate, extremely fine and dense punctation. Puncture diameter more than 5 times as small as eye facet. Distances between punctures about equal to their diameter, interspaces slightly shagreened, separate punctures in some places difficult to distinguish. Antennae rather long, with lengths of all antennal segments exceeding their width ( Fig. 6 ).

Pronotum widest about 2/3 its length from base, then narrowed. Lateral margins straight from base, then smoothly rounded ( Fig. 6 ). Ratio of pronotum length to its maximum width about 32:40. Surface of pronotum with delicate, extremely fine and dense punctation; punctation similar to that on head, but more distinct. Puncture diameter more than 5 times as small as eye facet. Distances between punctures about equal to their diameter, interspaces smooth, slightly shining. Pronotal disc with 1 barely noticeable narrow unpaired depression along midline at apex and 2 pairs of symmetrical depressions: 1 pair near disc base, merging across midline to form a rather deep diamond-shaped pit and 1 pair of rather weak, longitudinal, bean-shaped depressions, with slightly diverging apices, on either side of midline in central part of disc ( Fig. 6 ).

Ratio of length of elytra to their combined width about 53:56. Scutellum with weak, round depressions ( Fig. 6 ). Surface of elytra with delicate, fine and dense punctation. Puncture diameter about 4 times as small as eye diameter. Distances between punctures about equal to their diameter, interspaces smooth, slightly shining.

Abdomen delicately shagreened.

Aedeagus of characteristic structure ( Figs 22–23 ).

Female. Sexual dimorphism absent, female morphologically similar to male.

DISTRIBUTION. Indonesia, Sulawesi Island.

ETYMOLOGY. From Latin “filo” (thread, stretch into a thread) and “longi” (long, lengthy); the name refers to the morphology of parameres; they are long and thin at their apices.

Figures

Figs 4–6. Carpelimus (Bucephalinus) spp., holotypes, males, dorsal view: 4 — Carpelimus jayapurensis, sp.n.; 5 — Carpelimus filous, sp.n.; 6 — Carpelimus longifilous, sp.n. Рис. 4–6. Carpelimus (Bucephalinus) spp., голотипы, самцы, сверху: 4 — Carpelimus jayapurensis, sp.n.; 5 — Carpelimus filous, sp.n.; 6 — Carpelimus longifilous, sp.n.

Figs 22–29. Genitalia of Carpelimus: 22–24 — C. longifilous, sp.n.; 25–27 — C. tanbaranensis, sp.n.; 28–29 — C. solumus, sp.n.; 22, 25, 28 — aedeagus, ventral view (holotypes); 23, 26, 29 — aedeagus, lateral view (holotypes); 24, 27 – spermatheca (paratypes). Scale bar: 0.25 mm. Рис. 22–29. Гениталии Carpelimus: 22–24 — C. longifilous, sp.n.; 25–27 — C. tanbaranensis, sp.n.; 28–29 — C. solumus, sp.n.; 22, 25, 28 — Эдеагус, сниЗу (голотип); 23, 26, 29 — Эдеагус, сбоку (голотипы); 24, 27 – сперматека (паратипы). Масштаб: 0,25 мм.