Shepard, W.D. and Barr, C.B. 2016.

Neoelmis guarani Shepard & Barr, a sexually dimorphic new species from
Paraguay (Insecta: Coleoptera: Elmidae: Elminae)

. Zootaxa. 4083, 3 (Feb. 2016), 418–430. DOI:https://doi.org/10.11646/zootaxa.4083.3.6.