Scopaeus cuspilobatus Frisch 2022, spec. nov.
Creators: name: Frisch, Johannes
name: Narakusumo, Raden Pramesa
Publisher: name: Zenodo
Year: 2023
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Staphylinidae
Scopaeus
Scopaeus cuspilobatus

description: Scopaeus cuspilobatus Frisch, spec. nov.
(Figs 16, 38, 92 – 94, 134, 167, 168)
Type specimens: Indonesia: Holotype ♂, Jawa Barat, Sukabumi: Sirnarasa (Cimaja River), (06°51’32’’S, 106°31’06’’E), 670 m, 21.9.2015, leg. Frisch (MZB). Paratype: 1 ♀, same data as holotype (MFNB).
Description: Habitus and coloring as in Fig. 16. Head subquadrate. Penultimate antennal segment quadrate. Mesotibia moderately thickened. Setose punctation of body surface fine, dense on subnitid head, rugulose on matt elytra, more spacious on shiny pronotum; microreticulation absent. Pubescence of body surface short, decumbent, without conspicuous macrosetae. Body dark brown except for narrow, light brown posterior margin of elytra and tip of abdomen; antennae medium brown with darker segments 2 – 6; maxillary palpi light brown with darker penultimate segment; legs light brown with medium brown femora. Total body length 3.6 mm; forebody length 2.0 – 2.1 mm.
Male: Abdominal sternite VII with unmodified posterior margin. Abdominal sternite VIII with posterior margin with two very short, lateral emarginations and barely recognizably concave middle (Fig. 134). Aedeagus (Figs 38, 92 – 94) about 0.8 mm long with asymmetrical distal lobes; apical lobes curved ventrad with round ends (Figs 38, 92), in ventral and dorsal view stout with broad, subtruncate apices (Figs 93, 94); dextral apical lobe with little, ventroproximal tooth (Fig. 92: arrow I), convexly widened dextrad distally (Figs 93, 94); sinistral apical lobe evenly convex distolaterally, somewhat overlapping dextral apical lobe ventrally (Fig. 93); dorsal lobe broad with convex apex (Fig. 94); flagellum winding dextrad (Fig. 93), strongly projecting from apical lobes ventrally (Figs 38, 92); lateral lobes reduced, marked by unequal groups of setae (Figs 93, 94); ventral lobe broad, subquadrate, with truncate apex (Figs 38, 92), in ventral view narrow, strongly shifted sinistrad (Fig. 93); transverse ridge of median foramen concave (Fig. 93), strongly projecting ventrally (Figs 38, 92).
Female: Sperm pump with chamber abruptly narrowed at transition point towards bursal duct (Fig. 168); bursal duct about three times as long as sperm pump; bursa membranous (Fig. 167).
Phylogeny: Scopaeus cuspilobatus is a member of the S. gracilis species group (Frisch et al. 2002: 39).
Distribution: Scopaeus cuspilobatus is hitherto known only from the type locality in Jawa Barat.
Etymology: The epithet cuspilobatus [adjective, Latin, composed of the noun cuspis (sting, thorn, spine) and lobatus (indicating a characteristic/feature of the lobe)] refers to the distinct, ventral spine of the dextral apical lobe of the aedeagus of this new species (Figs 38, 83).
description: Published as part of Frisch, Johannes & Narakusumo, Raden Pramesa, 2022, Revision of Scopaeus Erichson, 1839 (Coleoptera, Staphylinidae, Paederinae) of Indonesia, with description of 19 new species, pp. 23-73 in Soil Organisms 95 (1) on page 48, DOI: 10.25674/so95iss1id311, http://zenodo.org/record/10724236