Homotropus crassicornis Thomson 1890

Homotropus crassicornis Thomson, 1890 (Figs 3 A–F) Homotropus crassicornis Thomson, 1890: 1490. Homocidus asyntactus Schmiedeknecht, 1926: not seen. Homotropus crassicornis: Dasch, 1964: 181. Homotropus crassicornis: Klopfstein, 2014b: 64. Specimens examined. JAPAN: [Honshu] 1F, Yamagata Pref., Mamurogawa Town, 14. VII. 2012, Y. Matsubara & K. Fukuda leg. (MsT) (KPMNH); 1F, Mie Pref., Inabe City, Mt. Fujiwaradake, 1. VI. 2021, S. Morishita leg. (KPMNH); 2F, ditto, (TMNH). GERMANY: 1F (det. E. Diller), Gottingen, 6. VII. 1946, (ZSM). ITALY: 1M (det. E. Diller), Catania, Tremestieri Etneo, 4. V. 1994, Turrisi leg. (ZSM). Diagnosis. See Klopfstein (2014b). Distribution. Japan (Honshu). Outside Japan, this species is widely distributed in Western Palearctic region (Yu et al. 2016). Bionomics. Host is unknown. In Japan, adults were collected from the canopies of broad‐leaved trees at altitudes of ca. 1,000 meters. Remarks. This is the first record of this species from Japan. Japanese specimens share the character states with the diagnosis of European specimens proposed by Klopfstein (2014b) well, while Japanese specimens differs from European specimens in the following character states: fore wing length 6.5–8.0 mm (5.1–6.5 mm in European specimens); hind trochantellus black with reddish-brown apex (entirely orange in European specimens); hind femur black with reddish-brown base (entirely orange in European specimens); hind tibia entirely black (orange with apex dark in European specimens). However, as no significant differences were found in other characters, we conclude that the observed variation is intraspecific variation within a single species.