Revision of Scopaeus Erichson, 1839 (Coleoptera, Staphylinidae, Paederinae) of Indonesia, with description of 19 new species Author Frisch, Johannes Author Narakusumo, Raden Pramesa MUseUm ZoologicUm Bogoriense, Research Center for Biosystematics and EvolUtion, National Research and Innovation Agency (BRIN), Jl. Raya Jakarta-Bogor KM 46, Cibinong, West Java, 16911, Indonesia text Soil Organisms 2022 2022-04-01 95 1 23 73 http://dx.doi.org/10.25674/so95iss1id311 journal article 291999 10.25674/so95iss1id311 06b03cc4-e211-4f65-be07-742740b0053c 2509-9523 10724236 Scopaeus cuspidatus Frisch , spec. nov. ( Figs 23 , 47 , 113 – 115 , 142, 143, 176) Type specimens: Indonesia : Holotype ♂ , Bali , Jembrana : Cekik , 20.6. 1994, 300 m , leg. Wunderle ( PWCM ) . Paratypes ( 2 specimens ): 1 ♂ , Central Sulawesi , Morowali : Beteleme – Tinompo ( 02°06’06’’S , 121°08’26’’E ), 430 m , 12.5.2017 , leg. Frisch ( MFNB ) ; 1 ♀ , Jawa Barat , NO Bogor : NO-slope Mt Salak ( 06°39’55’’S , 106°45’36’’E ), 640 m , 13.9.2016 , leg. Frisch ( MZB ) . Description: Habitus and coloring as in Fig. 23 . Head trapezoidal with concave posterior margin. Penultimate antennal segment transverse. Mesotibia moderately thickened. Forebody surface with relatively coarse, spacious, setose punctation; microreticulation absent; body surface shiny. Pubescence of body surface short, decumbent, without conspicuous macrosetae. Forebody unicolorous orange brown; abdomen light brown; appendages yellow-brown. Total body length 2.3 – 2.5 mm ; forebody length 1.2 – 1.3 mm . Male: Posterior margin of abdominal sternite VII extended in narrow, tapered, median lobe (Fig. 142). Abdominal sternite VIII with short, narrow, triangular emargination in posterior eighth and basal margin in median third notably concave, almost reaching subbasal ridge (Fig. 143). Aedeagus ( Figs 47 , 113 – 115 ) about 0.5 mm long, strongly sclerotized, thus dark reddish brown; phallobase compact, with large, distad projecting dorsodistal window ( Fig. 47 , 113 ), strongly narrowed towards long, slender, apicad tapered distal portion of aedeagus with narrow, short apical lobes each with ventroapical widening studded with longitudinal row of about six stout setae followed proximally by weakly sclerotized, broad, longitudinal enlargement with acute ventroproximal end ( Figs 113, 114 ); dorsal lobe and flagellum inconspicuous; ventral lobe beginning with wide, triangular, proximal enlargement projecting from phallobase, then weakly sclerotized distad, very thin in ventral view ( Fig. 114 ), in lateral view straight ventrally and evenly narrowed towards base of apical lobes ( Figs 47 , 113 ); median foramen small, limited distally by ventrally projecting, transverse ridge ( Figs 113, 114 ). Figures 113–115. Aedeagus of Scopaeus cuspidatus , holotype, Bali, Jembrana: Cekik in lateral ( 113 ), ventral ( 114 ), dorsal view ( 115 ). Abbreviations : al – apical lobes, dw – dorsodistal window of phallobase, mf – median foramen, tr – transverse ridge of median foramen, vl – ventral lobe. Female: Sperm pump with short process segment and long, straight chamber without apophysis, narrowed towards thin, weakly sclerotized bursal duct ( Fig. 176 ); bursa membranous. Distribution: Scopaeus cuspidatus was found in Bali , Jawa and Sulawesi and seems to be widespread across Indonesia . Etymology: For this new species the epithet cuspidatus (adjective, Latin: ‘tapered, pointed’) was chosen in reference of the distinct spine at the posterior margin of abdominal sternite VII (Fig. 142).