Figure 12 from: Hendrich L, Watts CHS, Balke M (2020) The "minute diving beetles" of southern Australia – taxonomic revision of Gibbidessus Watts, 1978, with description of six new species (Coleoptera, Dytiscidae, Bidessini). ZooKeys 975: 11-49. https://doi.org/10.3897/zookeys.975.55456

Figure 12 Head of G. davidi sp. nov. A with cervical line (red arrow), and head of G. pederzanii sp. nov. B without cervical line but rather a few punctures instead (red arrow).