A–F. Aedeagus (A–F) and abdominal segment 9 (G), dorsal view. A. Anacaena kumejimana, holotype; B. A. torikaii, holotype; C–G. A. okinawana, holotype (C) and paratypes (D–G); C, D, G. from Okinawa-jima I.; E, F. from Kerama Is. (E. Aka-jima I.; F. Zamami-jima I.).

 
 
  Part of: Minoshima YN, Kamite Y, Fikáček M (2023) The genus Anacaena Thomson from the Ryukyu Archipelago of Japan (Coleoptera, Hydrophilidae). Deutsche Entomologische Zeitschrift 70(1): 143-157. https://doi.org/10.3897/dez.70.96994