Head of Spencerhydrus species 31 S. latecinctus, instar II, dorsal aspect 32 S. pulchellus, instar III, dorsal aspect. Scale bar: 1.00 mm.

  Part of: Michat MC, Alarie Y, Watts CHS (2019) Dealing with a hairy beast–larval morphology and chaetotaxy of the Australian endemic diving beetle genus Spencerhydrus (Coleoptera, Dytiscidae, Cybistrini). ZooKeys 884: 53-67. https://doi.org/10.3897/zookeys.884.38391