FIGURE 2. Habitus. A–B in Revision of the species Grouvellinus Champion, 1923 (Coleoptera: Elmidae) with long median pronotal carina, including descriptions of four new species from China

FIGURE 2. Habitus. A–B) Grouvellinus longiusculus, holotype male; C–D) Grouvellinus mediocarinatus, holotype male. A, C) in dorsal view; B, D) in ventral view.Published as part of Bian, Dongju & Jäch, Manfred A., 2019, Revision of the species Grouvellinus Champion, 1923 (Coleoptera: Elmidae) with long median pronotal carina, including descriptions of four new species from China, pp. 127-140 in Zootaxa 4586 (1) on page 131, DOI: 10.11646/zootaxa.4586.1.6, http://zenodo.org/record/264273