Perkins, P.D. 2019.

Hydrochus spanglerorum n. sp., a remarkable, highly derived species from Brazil, Guyana, and Suriname (Coleoptera: Hydrochidae)

. Zootaxa. 4701, 6 (Dec. 2019), 581–587. DOI:https://doi.org/10.11646/zootaxa.4701.6.7.