Byttebier, B.; Torres, P. L. M. Description of the Preimaginal Stages of Enochrus (Hugoscottia) variegatus (Steinheil, 1869) and E. (Methydrus) vulgaris (Steinheil, 1869) (Coleoptera: Hydrophilidae), With Emphasis on Larval Morphometry and Chaetotaxy. Zootaxa 2009, 2139, 1–22.