Species delimitation in northern European water scavenger beetles of the genus Hydrobius (Coleoptera, Hydrophilidae)


	Measurement of Elytral Index (EI). 1 Length of elytra 2 Maximum width of elytra. EI (character 2.4) = 1 / 2. Image of Hydrobius fuscipes fuscipes.

Part of: Fossen EI, Ekrem T, Nilsson AN, Bergsten J (2016) Species delimitation in northern European water scavenger beetles of the genus Hydrobius (Coleoptera, Hydrophilidae). ZooKeys 564: 71-120. https://doi.org/10.3897/zookeys.564.6558