A Opisthostoma brachyacrum lambii Vermeulen, 1991 ME 14480 B Opisthostoma tridens Vermeulen, 1991 ME 14481 C Plectostoma anisopterum (Vermeulen, 1994) ME 14479 D Plectostoma austeni (E. A. Smith, 1894a) ME 14478 Gua Rumbang E Plectostoma pumilio (E. A. Smith, 1894a) ME 14477.

 
 
  Part of: Nasir NS, Lee JY, Marzuki ME, Vermeulen JJ, Mohd-Azlan J, Khalik MZ (2024) Checklist of land snail species of Gua Rumbang, Sarawak, Malaysian Borneo (Mollusca, Gastropoda), with a description of a new species, Diplommatina rumbangensis sp. nov. ZooKeys 1198: 295-340. https://doi.org/10.3897/zookeys.1198.116265