Nanotrachia undetermined

Köhler, Frank & Criscione, Francesco, 2013, Small snails in a big place: a radiation in the semi-arid rangelands in northern Australia (Eupulmonata, Camaenidae, Nanotrachia gen. nov.), Zoological Journal of the Linnean Society (Zool. J. Linn. Soc.) 169 (1), pp. 103-123 : 120

NANOTRACHIA COSTULATA SP. NOV.

Two subspecies are described herein. The nominate form occurs in the EK, comprising the western part of the range. The second subspecies occurs in the VRD, comprising the eastern part of the range. Both subspecies share identical shells but differ in development of inner penial wall pilasters.