Frischianus communis Frisch, sp. nov. (Figs 76–99, 240, 252) Type specimens: Holotype ♂, Indonesia, Jawa Barat, Bogor, SW Pamijahan (Cimuara Herang River), (06°42'41"S, 106°41'03"E), 990 m, 3.X.2015, leg. Frisch (ZMB). Paratypes (60 specimens): Indonesia: Aceh: Ketambe (Mt Leuser National Park): 1 ♂, 450 m, 26.II.–1.III.1991, leg. Bocák & Bocáková (NHMB), 4 ♂, 7 ♀, 300–500 m, 23.–30.XI.1989, leg. Agosti, Burckhardt & Löbl (MHNG). Jawa Barat: 1 ♀, same data as holotype (MFNB); 1 ♂, 1 ♀, Sukabumi, Cisalimas: Cisalimas River (E-slope of Mt Halimun) (06°45'21"S, 106°33'38"E), 870 m, 19.IX.2015, leg. Frisch (MFNB, ZMB); 1 ♂, 5 ♀, Sukabumi, Sirnarasa: Cimaja River (S-slope of Mt Halimun) (06°51'32"S, 106°31'06"E), 670 m, 21.IX.2015, leg. Frisch (MFNB, ZMB); 1 ♂, 1 ♀, Sukabumi, Simaresmi: Cisareno River (06°49'02"S, 106°30'09"E), 1000 m, 22.IX.2015, leg. Frisch (MFNB, ZMB); 1 ♂, Sukabumi, NNW Cidahu: Cirasamala River (S-slope of Mt Salak) (06°44'18"S, 106°42'52"E), 1210 m, 29.IX.2015, leg. Frisch (ZMB); 2 ♂, Sukabumi, Cikaniki: Cikaniki River (Mt Halimun, Halimun–Salak National Park) (06°44'46"S, 106°32'25"E), 1020 m, 5.X.2015, leg. Frisch (MFNB, ZMB). Jawa Tengah: 1 ♂, Pekalongan, E Petungkriono: mountain N Tinalum (07°06.418'S, 109°44.514E), 1120 m, 22.VIII.2006, leg. Riedel (SMNK). Bali: 1 ♂, 1 ♀, Mt Agung, 19.VII.1982, leg. Rougemont (HECO); 3 ♂, 4 ♀, Mt Batukaru [Mt Batukai, Mt Baturau], 500–700 m, 28.–29.X.1991, leg. Löbl (MHNG, MFNB); 2 ♂, Tabanan: Batukaru, 700 m, 12.VI.1994, leg. Wunderle (PWCM); 1 ♂, Tabanan: Bedugul, 1200 m, 13.VI.1994, leg. Wunderle (MFNB). Malaysia: 1 ♂, Pahang, Awana (Genting Highlands), 1150 m, 3.IV.1993, leg. Löbl & Calame (MHNG); 2 ♂, 2 ♀, Sabah, Koto Marudu, Sorinsim–Tokou [Topou] (6°127.278N, 116°42.417E), 22.–8.III.1997,leg. Floren (NHMW); Sabah, Ranau, Poring Hot Spring: 1 ♂, 9.IV.1990, leg. Rougemont (HECO), 8 ♂, 3 ♀, 7.–12.V.1987, leg. Burckhardt & Löbl (MHNG); 2 ♂, 2 ♀, Sarawak, Mt Mulu National Park, 50–100 m, V.–VIII.1978, leg. Hammond & Marshall (NHML). Description: Body size, exoskeletal characters, coloring (cf. Figs 2, 44), and shape of medioposterior incision of abdominal sternite VIII (cf. Fig. 200) as in Frischianus laticollis, but different according to shape of aedeagus and female gonocoxal plate as follows. Total body length 2.9–3.6 mm; forebody length 1.7–1.9 mm. Male: Aedeagus (Figs 76–99) with apical lobe short, strongly curved ventrad, round to right-angled widened ventrally, variable in width (Figs 76, 79, 82, 85, 88, 91, 94, 97). Dorsal endophallic spine variable, in lateral view slender, weakly to strongly curved ventrad, and with apical end thin and acute, in dorsal view wider, usually curved sinistrad with longitudinally or slightly dextrad directed, more or less dilated apical end (Figs 78, 81, 84, 87, 90, 93, 96). Length of aedeagus 0.41–0.44 mm. Female: Gonocoxal plate shorter, only about 1.6 times as long as wide; lateral margins somewhat more deeply concave (Fig. 252). Distribution: Frischianus communis is widespread in Indonesia and Malaysia. It is recorded from the north of Sumatra (Aceh), the Malay Peninsula (Pahang), and northern Borneo (Sabah, Sarawak) as far south as Java and Bali. Though no records are known from southern parts of Sumatra and Borneo, the species is certainly present there. Etymology: The epithet communis (adjective, Latin: common, frequent) refers to the widespread distribution of Frischianus communis in Southeast Asia compared to the presumably much smaller distribution areas of the other species of this genus. Comparative note: Frischianus laticollis, F. similis, and F. communis cannot be identified based on their external appearance alone. The distinguishing characters of F. laticollis and F. similis are discussed above in the species chapter for F. similis. Males of F. communis can easily be distinguished according to the short, strongly ventrad curved apical lobe of the adeagus (Figs 76, 79, 82, 85, 88, 91, 94, 97), while the apical lobe is straight in F. laticollis and F. similis (Figs 67, 70, 73). In F. laticollis, the apical lobe moreover exhibits a ventral apical tooth (Fig. 67). While females of F. laticollis seem to differ from females of F. similis and F. communis according to the longer gonocoxal plate (Fig. 250), females of the latter two species, which are sympatric in Java, agree in the shape of the gonocoxal plate (Figs 251, 251) and cannot be distinguished.

Published as part of Frisch, Johannes & Herman, Lee, 2025, Frischianus gen. nov., a new genus of the Scopaeina Mulsant & Rey, 1878 from the Oriental Region (Coleoptera: Staphylinidae: Paederinae: Lathrobiini), pp. 217-290 in Megataxa 17 (2) on page 243, DOI: 10.11646/megataxa.17.2.1, http://zenodo.org/record/18484125