Genus Appasus Amyot & Serville, 1843
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- Lee, C.E. 1991. Morphological and phylogenetic studies on the true waterbugs (Hemiptera: Heteroptera) 21(2): 1-183. Nature and Life.
- Montandon, A.L. 1900a. Notes sur quelques genres de la Fam. Belostomidae 9: 264-273. Buletinul Societătii de Sciinţe din Bucuresci, România.
- Poisson, R. 1937. Voyage de M. P.-P. Grassé en Afrique Occidentale française. Hémiptèra aquatica 106: 115-132. Annales de la Société Entomologique de France.
- Polhemus, J.T. 1995a. Nomenclatural and synonymical notes on the genera Diplonychus Laporte and Appasus Amyot and Serville (Heteroptera: Belostomatidae) 97: 649-653. Proceedings of the Entomological Society of Washington.
- Spinola, M. 1850. Tavola sinottica dei generi spettanti alla classe degli insetti artroidignati, Hemiptera, Linn. Latr. - Rhynchota, Fab., Rhynchota, Burm.: 1-138. Camera, Modena..