Microcystina, Morch, 1872

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
persistent identifier	https://treatment.plazi.org/id/45B38426-0F6C-5804-BE8F-8BB777AB9739
treatment provided by	ZooKeys by Pensoft (2025-03-05 18:13:24, last updated 2025-03-05 18:18:01)
scientific name	Microcystina
status

Treatment

Microcystina View in CoL Penang sp. 4

Fig. 9 B View Figure 9

Material examined.

Malaysia • Penang Hill, The Habitat, Research trail, Plot. 03; 5.4226 ° N, 100.2645 ° E; 750 m a. s. l.; 5 Sept. 2022; T. S. Liew, J. Dulipat, S. M. Goh leg.; BOR / MOL 15462 GoogleMaps • 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 15463 GoogleMaps • 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 15755 GoogleMaps .

Remarks.

This is a new record for Penang Hill. The shell spire is moderately raised, with a height less than half of the last whorl height. On the upper shell, the apical whorls are smooth, and subsequent whorls have regularly spaced deep radial grooves. This species has the most prominent radial grooves compared to other Microcystina species from Penang Hill. Below the shell, there are regularly spaced, deep, radial grooves that continue from the upper shell.

Figures

Figure 9. A Microcystina Penang sp. 2 BOR / MOL 15458 B Microcystina Penang sp. 4 BOR / MOL 15755 C Microcystina Penang sp. 5 BOR / MOL 15762 D Microcystina Penang sp. 6 BOR / MOL 15756. Scale bar: 0.5 mm.