Anauchen huaykhakang Panha 2002

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.