Helicarion permolle Stoliczka, 1873

Figs 11 D, 21 C

Material examined.

Malaysia • Penang Hill, The Habitat, Habitat nature trail, Plot. 04; 5.4231 ° N, 100.2668 ° E; 770 m a. s. l.; 5 Sept. 2022; T. S. Liew, J. Dulipat, S. M. Goh leg.; BOR/MOL 15117 • same data as for preceding; BOR/MOL 15480 • Penang Hill, The Habitat, Habitat nature trail, Plot. 05; 5.4228 ° N, 100.2653 ° E; 770 m a. s. l.; 5 Sept. 2022; T. S. Liew, J. Dulipat, S. M. Goh leg.; BOR/MOL 15196 • Penang Hill, The Habitat, Habitat nature trail, Plot. 07; 5.4210 ° N, 100.2642 ° E; 760 m a. s. l.; 6 Sept. 2022; T. S. Liew, J. Dulipat, S. M. Goh, M. Y. Lee leg.; BOR/MOL 15144 • Penang Hill, Botanical garden, Plot. 12; 5.4396 ° N, 100.2860 ° E; 85 m a. s. l.; 4 Sept. 2022; T. S. Liew, J. Dulipat, S. M. Goh leg.; BOR/MOL 15121 • Penang Hill, Trail from Viaduct to Claremont, after shelter, Plot. 27; 5.4205 ° N, 100.2724 ° E; 500 m a. s. l.; 26 Oct. 2022; T. S. Liew, J. Dulipat leg.; BOR/MOL 15235 • Penang Hill, Botanical garden, Plot. 29; 5.4400 ° N, 100.2866 ° E; 75 m a. s. l.; 2 Feb. 2023; T. S. Liew, M. Y. Lee, A. Yusni leg.; BOR/MOL 15742 • same data as for preceding; BOR/MOL 15768 • 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 15741 • Penang Hill, Path B, Random 1. PathB; 5.4216 ° N, 100.2674 ° E; 730 m a. s. l.; 4 Sept. 2022; T. S. Liew, J. Dulipat leg.; BOR/MOL 15109 .

Remarks.

This species was previously described by Stoliczka (1873), and it is one of the most common semi-slugs from Penang Hill. It was listed as taxon inquirendum on MolluscaBase (2024) [https://molluscabase.org/aphia.php?p=taxdetails&id=1337679]. We suggest that this is a valid species as the specimens fit the description in Stoliczka (1873).