Figures 2-4 from: Freitag H, Pangantihon CV, Njunjić I (2018) Three new species of Grouvellinus Champion, 1923 from Maliau Basin, Sabah, Borneo, discovered by citizen scientists during the first Taxon Expedition (Insecta, Coleoptera, Elmidae). ZooKeys 754: 1-21. https://doi.org/10.3897/zookeys.754.24276

Figures 2-4 Habitus of the new Grouvellinus species collected from the Maliau Basin: 2 G. leonardodicaprioi sp. n. (image of holotype male partly complemented) 3 G. quest sp. n. (paratype male from 'NepC3g') 4 G. andrekuipersi sp. n. (paratype male from 'NepC3g'). Scale bar: 1 mm.