Papuamicrus globosus Jałoszyński 2023, sp. n.
Creators: name: Jałoszyński, Paweł
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Papuamicrus
Papuamicrus globosus

description: Papuamicrus globosus sp. n.
(Figs 1–15)
Type material. Holotype: PAPUA NEW GUINEA (Morobe Province): ♁, three labels: “ N. Guinea / Bíró 1899” [yellowish, printed], “Sattelberg / Huon-Golf.” [yellowish, printed], “ PAPUAMICRUS / globosus m. / P. Jałoszyński, 2023 / HOLOTYPUS” (MHNG). Paratypes: 1 ♁, 1 ♀, “PAPUA NG: Morobe / above Wau / 1450m, 21.V.1992 / G. Cuccodoro #5A” [white, printed], and yellow “PARATYPUS” label (MHNG, cPJ).
Diagnosis. As for genus; aedeagus broadest near proximal third, apex broadly subtriangular and rounded, endophallus with asymmetrical broad tube in distal 2/3 flanked by weakly sclerotized longitudinal structures, in subapical region with pair of lateral elongate and poorly sclerotized components flanking distal C-shaped portion of flagellum.
Description. Body of male (Figs 1–3) stout, strongly convex, light to moderately dark reddish brown, setae barely discernible; BL 0.83–0.86 mm.
Head (Figs 4–9) broadest at large, strongly convex eyes, HL 0.10–0.13 mm, HW 0.23–0.25 mm; frons and vertex confluent and weakly convex, virtually impunctate and sparsely covered with short recumbent setae. Frontal glands (Fig. 5) small and distinct. Each eye composed of 24 coarse facets. Antennae (Fig. 10) slender, AnL 0.33 mm; scape and pedicel elongate, antennomere 3 indistinctly elongate, 4–9 each distinctly elongate (9 longest, more than twice as long as broad), 10 and 11 each about as long as broad, 11 subconical with rounded apex.
Pronotum (Figs 1, 3) broadest near middle; PL 0.25–0.26 mm, PW 0.43–0.44 mm. Anterior margin in dorsal view broadly rounded; anterior corners (visible in anterodorsal view) subtriangular and blunt, weakly obtuse-angled, lateral margins strongly rounded in anterior half and weakly rounded in posterior half, where they are distinctly convergent posteriorly, smooth, not serrate; posterior corners strongly obtuse-angled and blunt; base indistinctly biarcuate and with short and indistinct shallow emargination in front of mesoscutellar shield. Disc virtually impunctate, covered sparsely with microscopic recumbent setae.
Elytra (Figs 1–2) together oval, broadest near anterior third; EL 0.48 mm, EW 0.45 mm, EI 1.06; humeral calli indistinct, not delimited by carinae or step-wise impressions. Punctures and setae on elytra similar to those on pronotum. Hind wings absent.
Legs moderately long and slender; unmodified.
Aedeagus (Figs 12–15) conspicuously elongate; AeL 0.38; median lobe in ventral view cigar-shaped, broadest in sub-basal third, in subapical area slightly but rapidly narrowing toward subtriangular apex of dorsal wall of aedeagus, ventrally ostium closed by membranous folds; endophallus with asymmetrical broad tubular sclerotized structure and with several weakly sclerotized structures flanking broad flagellum; each paramere long and slender, with three apical setae.
Female. Similar to male but with clearly smaller eyes, each composed of nine facets. BL 0.85 mm; HL 0.11 mm, HW 0.24 mm, AnL 0.30 mm; PL 0.26 mm, PW 0.43 mm; EL 0.48 mm, EW 0.45 mm, EI 1.06.
Distribution. Papua New Guinea.
Etymology. The Latin adjective globosus refers to the subglobose body form.
Remarks. The specimen designated here as the holotype was collected by the famous Hungarian zoologist Lajos Bíró, who explored Papua New Guinea at the end of the 20th century. Sattelberg, the type locality, is a village on the Huon Peninsula, eastern Papua New Guinea.
description: Published as part of Jałoszyński, Paweł, 2023, Papuamicrus gen. n., a new genus of Cephenniini from New Guinea (Coleoptera: Staphylinidae: Scydmaeninae), pp. 492-500 in Zootaxa 5339 (5) on page 498, DOI: 10.11646/zootaxa.5339.5.6, http://zenodo.org/record/8309467