Nata

David G. Herbert & Adnan Mousalli, 2016, Revision of the dwarf cannibal snails (Nata s. l.) of southern Africa — Nata s. s. and Natella (Mollusca: Gastropoda: Rhytididae), with description of three new species, Zootaxa 4094 (1), pp. 1-67 : 17

Key to genera within Nata s.l.

1. Epiphallus present, inserting laterally into penis; vas deferens reflexed; vagina short or non-existent; base of bursa copulatrix duct swollen or with an associated atrial diverticulum; kidney trigonal......................................... Nata

– Epiphallus absent; vas deferens not reflexed, inserting at penis apex; vagina and penis of more or less equal length; base of bursa copulatrix duct not swollen and without an associated atrial diverticulum; kidney bean-shaped............... Natella