• Antennal setae formula 0-1-3 / 0-0-3
• Postabdomen long, slender and flexible
• Three head pores along medial axis of head shield

• The genus Camptocercus is poorly known in North America, with only C. oklahomensis being adequately described (1)(2). Camptocercus rectirostris, C. lilljeborgi, and C. macrurus are European species and appear not to occur in North America (1)(2). See Smirnov (1998) for a key to the genus Camptocercus. The only North American species listed in his key is C. oklahomensis, but the paper provides taxonomic information and features which may apply to North American populations.

(1) DODSON, S.I., and D.G. FREY. 1991. Cladocera and Other Branchiopoda, p. 723-786. In J.H. THORP and A.P. COVICH [eds.], Ecology and Classification of North American Freshwater Invertebrates. Academic.

(2) SMIRNOV, N.N. 1998. A revision of genus Camptocercus (Anomopoda, Chydoridae, Aloninae). Hydrobiologia. 386: 63-83.