Published February 16, 2016 | Version v1
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Figure 4 from: 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

  • 1. Norwegian University of Science and Technology (NTNU), Trondheim, Norway
  • 2. Department of Natural History NTNU University Museum, Trondheim, Norway
  • 3. Umeå University, Umeå, Sweden
  • 4. Swedish Museum of Natural History , Stockholm, Sweden

Description

Figure 4 - 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.

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