Anauchen huaykhakang Panha, 2002

Figs 10 G, 19, 37

Anauchen huaykhakang Panha in Burch & Panha, 2002: 239–244, fig. 2.

Anauchen huaykhakang — Panha and Burch 2008: 51–52, fig. 47; Dumrongrojwattana and Wongkamhaeng 2024: 323, fig. 7.

Type material examined.

Thailand • 1 paratype; from the type locality; 1997; S. Panha leg.; CUMZ ver. 038 .

Type locality.

“ Subkao, Huaykhakang Wildlife Sanctuary, Lansak District, Utaithani Province, 15°35'7"N, 99°18'8"E, 310 meters elevation … ” (Thailand).

Differential diagnosis.

This species differs from A. angthongensis by the shouldered last whorl and concave-conical shell (due to the strongly enlarged last whorl). Anauchen banmiensis is much more strongly spirally striated, it last whorl is more distinctly shouldered and has a wider umbilicus with a deep groove inside it (absent in A. huaykhakang). For differences from A. utaithaniensis, see under that species.

Distribution.

This species is known only from the type locality.