Herpetocypridinae Kaufmann, 1900

Martens, Koen, 2017, On the affinity of Isocypridinae and Herpetocypridinae, with redescriptions of four species of Ilyodromus Sars, 1894 (Crustacea, Ostracoda), Zootaxa 4318 (1), pp. 47-81 : 49

Subfamily Herpetocypridinae Kaufmann, 1900

Diagnosis (modified after Martens 2001). Large (1.0– 3.5mm), mostly elongated and laterally compressed Cp; marginal valve structures mostly well developed; branched pore canals and marginal septa present in some genera. Most genera with conical inclusions in the valves, visible with transmitted light as small extra pores. Anterior calcified lamella wider than posterior one; pore-canals mostly branched along ventral margin, simple and straight along anterior and posterior margins; false pore canals present (remnants of fused selvage); selvage present or absent.

A 1 in some genera with large RO. A 2 in males with claw GM developed into a comb-like structure, with one row of strong teeth. CR well developed, symmetrical or asymmetrical; CR attachment with a triangular basal reinforcement (in some genera only weakly developed, with a single short branch). Hemipenis with large and sclerotized bladder-like part ‘c’ of the labyrinth, post-labyrinthal internal spermiduct with up to 6 additional whorls.