Philalanka kusana (Aldrich, 1889)

Fig. 13 C

Material examined.

Malaysia • Penang Hill, By Path H, Plot. 33; 5.4210 ° N, 100.2701 ° E; 610 m a. s. l.; 4 Feb. 2023; T. S. Liew, A. Yusni leg.; BOR/MOL 15760 .

Remarks.

This is a new record for Penang Hill. This species differs from the other two Philalanka species by having no more than two spiral ribs on the penultimate whorls.