Figure

Fig. 20.2. General morphology of adult Hydrophilidae. A–C, general habitus (A, generalised hydrophilid, dorsal; B, Helochares sp., ventral; C, Cryptopleurum sp., ventral). D–F, antenna (D, Enochrus sp.; E, Berosus sp.; F, Megasternini gen. sp.). G, detail of trichobothria. H–I, internal view of ventral portion of meso- and metathorax with mesofurca (H, Chaetarthria sp.; I, Amphiops sp.). K–L, metathoracic wing (K, Austrotypus nothofagi Fikáček, Minoshima and Newton; L, Megasternini: Kanala sp.). M, ventral view of elytron of Laccobius sp. N–P, posterior tarsus (N, Helochares sp.; O, Coelostoma sp.; P, Noteropagus sp.). Q, abdomen in lateral view; R, female genitalia of Megasternini: Kanala sp. S–T, male genitalia of Austrotypus nothofagi (S, aedeagus; T, sternite 9). H–I, N–O adapted from Short & Fikáček (2013); K, S–T from Fikáček et al. (2014a); L and R adapted from Fikáček (2010c); M and Q adapted from Hansen (1991).