A review of the genus Satonius (Coleoptera: Myxophaga: Torridincolidae): taxonomic revision, larval morphology, notes on wing polymorphism, and phylogenetic implications Author Hájek, Jiří Department of Entomology, National Museum, Kunratice 1, CZ- 148 00 Praha 4, Czech Republic; e-mail: jiri _ hajek @ nm. cz Author Fikáček, Martin Department of Entomology, National Museum, Kunratice 1, CZ- 148 00 Praha 4, Czech Republic; e-mail: jiri _ hajek @ nm. cz & Charles University in Prague, Faculty of Science, Department of Zoology, Viničná 7, CZ- 128 44 Praha 2, Czech Republic; e-mail: MFikacek @ seznam. cz text Acta Entomologica Musei Nationalis Pragae 2008 2008-12-08 48 2 655 676 journal article 10.5281/zenodo.5341906 0374-1036 5341906 Satonius kurosawai ( Satô, 1982 ) ( Figs. 18-19 , 27, 29, 31 ) Material examined. 10 larvae of ultimate instar, 6 larvae of penultimate instar ( NMPC ): JAPAN : HONSHŪ : Aichi Pref. , Houraji-ko, 4.v.1997 , M. Satô leg. Diagnosis. Generally similar to larva of S. stysi sp. nov. in most external characters, except for measurements, chaetotaxic characters mentioned below, and morphological characters summarized in Table 3 . Measurements. Head width: 0.37 mm (penultimate instar), 0.43 mm (ultimate instar); body length: 1.12-1.25 mm (penultimate instar), 1.42-1.55 mm (ultimate instar); maximum body width: 0.72-0.76 mm (penultimate instar), 0.95-1.02 mm (ultimate instar). Chaetotaxy. Identical in both species on most body parts with the following exceptions. Maxilla: apex of mala with one fixed lateral tooth and three stout spiniform setae and four thinner and longer trichoid setae mesally ( Fig. 18 ). Legs: coxa with one additional short hairlike seta basally. Abdomen: lateral lobes of abdominal nodes generally with lower number of setae (see Table 2 ); at least some setae on these lobes bifid at apex in ultimate instar ( Fig. 29 ), all setae simple in penultimate instar. Urogomphi ( Fig. 31 ): bearing 8-10 long trichoid setae, one fine and short basal seta, and one spiniform seta at apex. For detailed description see BEUTEL (1998) .