Carpelimus (Bucephalinus) jayapurensis Blackwelder 1952, sp.n.
Creators: name: Gildenkov, M. Yu.
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Carpelimus

description: Carpelimus (Bucephalinus)jayapurensisGildenkov,sp.n.
Figs 4, 14–16.
MATERIAL. Holotype, ♂, West Papua “ INDONESIA. Irian Jaya Jayapura district Genyem., 50 m NN, IV–V. 1999, leg. M.Balke ” (NKME). Paratypes: 1♂, 7♀♀, 2 ex. “ INDONESIA. Irian Jaya Jayapura district Genyem., 50 m NN, IV–V. 1999, leg. M.Balke ” (NKME); 3♂♂, 3♀♀, 5 ex. “ INDONESIA. Irian Jaya Nabire distri.., 150 m NN, Cemara River, VIII.1998, leg. M.Balke ” (NKME; cMG — 2♂♂, 1♀, 1 ex.).
DESCRIPTION (holotype). Length 1.8 mm. Overall colouration dark brown. Head, pronotum and elytra dark brown; abdomen black brown; legs and antennal base yellow brown, antennae darkened toward apex to 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 16:23. Neck constriction prominent. Eyes large, convex. Temples well-developed, round, eye diameter in dorsal view about 2.0 times as long as temple length. Head widest across eyes (Fig. 4). Head surface with rather delicate, fine and dense punctation. Puncture diameter about 2.0 times as small as eye facet. Distances between punctures about equal to their diameter, interspaces smooth, slightly shining. Antennae rather short, antennal segments 1– 3 elongated; segments 4–5 slightly elongated; segments 6–7 about as long as wide; segments 8–10 transverse; segment 11 elongated, conical. Last 3 segments more massive than others and form loose club (Fig. 4).
Pronotum widest about 2/3 its length from base, then narrowed. Lateral margins straight from base, then smoothly rounded (Fig. 4). Ratio of pronotum length to its maximum width about 20:27. Surface of pronotum with rather distinct, large and dense punctation. Puncture diameter near lateral margins almost 1.5 times as large as eye facet, puncture diameter in central part of disc about 1.5 times as small as eye diameter. Distances between punctures significantly smaller than their diameter, interspaces smooth, slightly shining. Pronotal disc with 1 unpaired oval depression along midline near apex and 2 pairs of prominent, symmetrical depressions: 1 pair of narrowly crescent-shaped depressions, separated by medial ridge, near base of disc and 1 pair of rather deep and oval depressions in central part of disc, merging together with their bases across midline to form a single butterfly-shaped depression (Fig. 4).
Ratio of length of elytra to their combined width about 31:35. Scutellum with weak round depressions (Fig. 4). Elytral surface with delicate, fine and dense punctation. Puncture diameter about 1.5 times as small as eye facet. Distances between punctures significantly smaller than their diameter, interspaces smooth, slightly shining.
Abdomen delicately shagreened.
Aedeagus of characteristic structure (Figs 14–15).
Female. Sexual dimorphism absent, female morphologically similar to male.
Spermatheca of characteristic structure (Fig. 16).
COMPARATIVE REMARKS. The new species is similar to Carpelimus (Bucephalinus) curvus Gildenkov, 2014a described from Taiwan [Gildenkov, 2014]. It differs in its geographic distribution, smaller body size, much better developed eyes, larger punctation on the pronotum, especially in the area of the lateral margins, and can be clearly distinguished by the details of the structure (Figs 14–15) of the aedeagus [Gildenkov, 2014a: 234, Fig. 1: 1].
DISTRIBUTION. Indonesia, Western New Guinea. ETYMOLOGY. Named for its geographical distribution.
description: Published as part of Gildenkov, M. Yu., 2020, Eight new species of the genus Carpelimus Leach, 1819 from Indonesia (Coleoptera: Staphylinidae: Oxytelinae), pp. 53-60 in Russian Entomological Journal 29 (1) on pages 55-56, DOI: 10.15298/rusentj.29.1.07, http://zenodo.org/record/10978286