Ditropopsis sp.

Goh, Soo-Mun, Jasrul, Dulipat, Lee, Mei-Yi, Vermeulen, Jaap J. & Liew, Thor-Seng, 2025, From 153 - year-old records to contemporary discoveries: land snail (Mollusca, Gastropoda) diversity in Penang Hill, Malaysia, ZooKeys 1230, pp. 99-154 : 99-154

publication ID	https://doi.org/10.3897/zookeys.1230.136906
publication LSID	lsid:zoobank.org:pub:0FBF41B0-1D35-4A31-9653-B1F475FBDF80
DOI	https://doi.org/10.5281/zenodo.14976960
persistent identifier	https://treatment.plazi.org/id/1398AC9D-659B-574F-B1C6-5FD86CB7AD3E
treatment provided by	ZooKeys by Pensoft (2025-03-05 18:13:24, last updated 2025-03-06 22:33:36)
scientific name	Ditropopsis sp.
status

Treatment

Ditropopsis sp.

Fig. 5 C View Figure 5

Materials examined.

Malaysia • Penang Hill, Moniot trail, Plot. 32 ; 5.4165 ° N, 100.2574 ° E; 695 m a. s. l.; 4 Feb. 2023; T. S. Liew, A. Yusni leg.; BOR/MOL 15747 GoogleMaps .

Remarks.

New record for Penang Hill. So far, only one Ditropopsis species has been recorded from Peninsular Malaysia ( Maassen 2001), namely Ditropopsis cavernae ( Sykes, 1903) , which is distinctly different from the species found on Penang Hill. This genus was not recorded in previous systematic inventory studies in Peninsular Malaysia ( Liew 2010; Foon et al. 2017; Foon and Marzuki 2023). The species from Penang Hill is similar to Ditropopsis constricta Vermeulen, Liew & Schilthuizen, 2015 in terms of size, shape, and shell sculpture but differs by having a detached protoconch.

References

Foon JK, Clements GR, Liew TS (2017) Diversity and biogeography of land snails (Mollusca, Gastropoda) in the limestone hills of Perak, Peninsular Malaysia. ZooKeys 682: 1–94. https://doi.org/10.3897/zookeys.682.12999

Foon JK, Marzuki ME (2023) A checklist of land snails (Mollusca, Gastropoda) of Batu Caves, Selangor, Malaysia. Malayan Nature Journal 75 (1): 133–148.

Liew TS (2010) The land snail fauna of the Lojing Highlands (Mollusca: Gastropoda). In: Omar IC, Hamzah Z (Eds) Conservation Lojing Highlands for Sustainable Development. Universiti Malaysia Kelantan, 98–104. https://doi.org/10.13140/RG.2.1.4311.5364

Maassen WJM (2001) A preliminary checklist of the non-marine molluscs of West Malaysia. De Kreukel (extra edition 2001) 2001: 1–155.

Sykes ER (1903) On the land operculate Mollusca collected during the Skeat Expedition to the Malay Peninsula in 1899 - 1900. Proceedings of the Zoological Society of London 1903 (1): 194-199. https://www.biodiversitylibrary.org/page/31598794#page/258/mode/1up

Vermeulen JJ, Liew TS, Schilthuizen M (2015) Additions to the knowledge of the land snails of Sabah (Malaysia, Borneo), including 48 new species. ZooKeys 531: 1-139. https://doi.org/10.3897/zookeys.531.6097

Figures

Figure 5. A Cyclophorus malayanus (W. H. Benson, 1852) BOR / MOL 15149 B Cyclophorus perdix borneensis (Metcalfe, 1854) BOR / MOL 15726 C Ditropopsis sp. BOR / MOL 15747 D Lagocheilus Penang sp. 2 BOR / MOL 15429 E Lagocheilus trochoides (Stoliczka, 1872) BOR / MOL 15739 F Lagocheilus striolatus Stoliczka, 1872 BOR / MOL 15200. Scale bars: 10 mm (A, B); 1 mm (C); 5 mm (D – F).