Fig. 4 in Larval morphology of the Japanese species of the tribes Acidocerini, Hydrobiusini and Hydrophilini (Coleoptera: Hydrophilidae)

Fig. 4. General morphology of the head and mouthparts of the Acidocerini, Hydrobiusini and Hydrophilini.A–C – head and anterior part of thorax, schematic: A – dorsal view; B – ventral view; C – lateral view. D–G – head appendages, dorsal view: D – antenna; E – mandible; F – maxilla; G – labium (submentum omitted).