Diagnostic features of Grouvellinus loong sp. nov., paratype A head, dorsal view B pronotum, dorsal view C elytra, dorsal view D ventral habitus E metatibia, male F same, female. Scale bars: 0.25 mm (A, B, E, F); 0.5 mm (C, D).

 
 
  Part of: Jiang R-X, Wu P-L, Chen X-S (2024) Five new species of the genus Grouvellinus Champion, 1923 from Guizhou Province, China (Coleoptera, Elmidae). ZooKeys 1219: 73-97. https://doi.org/10.3897/zookeys.1219.125754