Michat, M. C., Alarie, Y., & Hendrich, L. (2014).

Description of the third instar of Hygrobia nigra (Clark, 1862) Coleoptera: Paelobiidae), with a key for the identification of mature larvae of Hygrobia Latreille, 1804 and phylogenetic analysis

. Zootaxa, 3827(3), 318–330. https://doi.org/10.11646/zootaxa.3827.3.2