Papuamicrus globosus, Jałoszyński, 2023

Jałoszyński, Paweł, 2023, Papuamicrus gen. n., a new genus of Cephenniini from New Guinea (Coleoptera: Staphylinidae: Scydmaeninae), Zootaxa 5339 (5), pp. 492-500 : 498

publication ID	https://doi.org/ 10.11646/zootaxa.5339.5.6
publication LSID	lsid:zoobank.org:pub:DAB20943-70D7-4129-9D89-E144D6EC4997
DOI	https://doi.org/10.5281/zenodo.8309608
persistent identifier	https://treatment.plazi.org/id/21518782-F821-B60A-F0B2-FD889DCB8BE6
treatment provided by	Plazi
scientific name	Papuamicrus globosus
status	sp. nov.

Treatment

Papuamicrus globosus sp. n.

( Figs 1–15 View FIGURES 1–4 View FIGURES 5–11 View FIGURES 12–15 )

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 View FIGURES 1–4 ) stout, strongly convex, light to moderately dark reddish brown, setae barely discernible; BL 0.83–0.86 mm.

Head ( Figs 4–9 View FIGURES 1–4 View FIGURES 5–11 ) 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 View FIGURES 5–11 ) small and distinct. Each eye composed of 24 coarse facets. Antennae ( Fig. 10 View FIGURES 5–11 ) 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 View FIGURES 1–4 ) 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 View FIGURES 1–4 ) 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 View FIGURES 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.