Scopaeus uncinatus Frisch, 2022

Frisch, Johannes & Narakusumo, Raden Pramesa, 2022, Revision of Scopaeus Erichson, 1839 (Coleoptera, Staphylinidae, Paederinae) of Indonesia, with description of 19 new species, Soil Organisms 95 (1), pp. 23-73 : 53-54

publication ID	https://doi.org/ 10.25674/so95iss1id311
DOI	https://doi.org/10.5281/zenodo.10724321
persistent identifier	https://treatment.plazi.org/id/03B7C77A-FFDE-FFEB-BF72-FD630F8E0796
treatment provided by	Felipe
scientific name	Scopaeus uncinatus Frisch
status	sp. nov.

Treatment

Scopaeus uncinatus Frisch , spec. nov.

( Figs 19 View Figures 17–22 , 44 View Figures 42–49 , 101– 103 View Figures 98–103 , 137, 172)

Type specimens: Indonesia: Holotype ♂, Banten, Lebak: Citorek Kidul (06°44’51’’S, 106°19’13’’E), 870 m, 23.5.2016, leg. Frisch ( MZB) GoogleMaps . Paratypes (9 specimens): 2 ♂, 3 ♀, same data as holotype ( MFNB, MZB) GoogleMaps . Jawa Barat: 3 ♀, Sukabumi, NNW Cidahu: Cirasamala River (S-slope Mt Salak ), (06°44’18’’S, 106°42’52’’E), 1210 m, 29.9.2015, leg. Frisch ( MFNB, MZB) GoogleMaps ; 1 ♂, Sukabumi, Cikaniki: Cikaniki River ( Mt Halimun , Halimun-Salak NP), (06°44’46’’S, 106°32’25’’E), 1020 m, 5.10.2015, leg. Frisch ( MZB) GoogleMaps .

Description: Habitus and coloring as in Fig. 19 View Figures 17–22 . Head subquadrate. Penultimate antennal segment quadrate. Mesotibia moderately thickened. Body surface subnitid with fine, dense, setose punctation; microreticulation obtuse or absent. Pubescence of body surface short, decumbent, without conspicuous macrosetae. Forebody dark brown; abdomen medium brown with blackened disk of abdominal segments to unicolorous black-brown; posterior margin of elytra and tip of abdomen medium brown; maxillary palpi light brown; antennae unicolorous light brown or with darker median segments, in dark specimens from blackened scapus gradually lighter towards light brown terminal segments. Total body length 3.6 – 4.3 mm; forebody length 2.1 – 2.3 mm.

Male: Abdominal sternite VII with unmodified posterior margin. Emargination of abdominal sternite VIII very short, shaped like transverse ‘}’, occupying posterior tenth of sternite length only (Fig. 137). Aedeagus ( Figs 44 View Figures 42–49 , 101 – 103 View Figures 98–103 ) about 1.0 mm long, with short distal lobes; apical lobes in lateral view slender with hooked ventrad curved apices divided in strongly sclerotized distal and membranous proximal part ( Figs 44 View Figures 42–49 , 101 View Figures 98–103 ), membranous and convex laterally with parallel, mediad curved subtruncate ends ( Fig. 102 View Figures 98–103 ) connected by transverse, mediodistal bridge ( Fig. 103 View Figures 98–103 : arrow III); dorsal lobe in lateral view with acute end, triangularly widened ventrad and projecting from apical lobes ventrally, in ventral and dorsal view widely convex with minute, apicomedian incision ( Figs 102, 103 View Figures 98–103 ); flagellum short, not projecting ventrally ( Figs 44 View Figures 42–49 , 101 – 103 View Figures 98–103 ); lateral lobes large, strongly projecting ventrolaterally, each with membranous, strip-like, proximal enlargement ( Fig. 102 View Figures 98–103 : arrow II) and group of ventromediad pointing setae; ventral lobe large, strongly projecting ventrodistad, with convex end in lateral and ventral view ( Figs 44 View Figures 42–49 , 101, 102 View Figures 98–103 ); median foramen small, shaped like transverse crescent moon, with transverse ridge projecting ventrally ( Figs 44 View Figures 42–49 , 101 View Figures 98–103 ).

Female: Chamber of sperm pump with short, curved apophysis; bursal duct about as long as sperm pump; bursa with strongly sclerotized end ( Fig. 172 View Figures 163–172 ).

Distribution: Scopaeus uncinatus is hitherto known from western Java only. It was collected at the edge of Mount Halimun-Salak National Park in Banten and Jawa Barat.

Etymology: The epithet uncinatus (adjective, Latin: ‘hook-shaped’) refers to the hooked apical lobes of the aedeagus of this new species ( Figs 44 View Figures 42–49 , 101 View Figures 98–103 ).