Hendrich, L., Manuel, M. and Balke, M. 2019.

The return of the Duke—locality data for Megadytes ducalis Sharp, 1882,
the world’s largest diving beetle, with notes on related species (Coleoptera: Dytiscidae)

. Zootaxa. 4586, 3 (Apr. 2019), 517–535. DOI:https://doi.org/10.11646/zootaxa.4586.3.8.