Supplementary data: Conchological and molecular analysis of the "non-scaly" Bornean Georissa with descriptions of three new species (Gastropoda, Neritimorpha, Hydrocenidae)

Khalik, M. Z. (Creator), Hendriks, K. (Creator), Vermeulen, J. J. (Creator), Schilthuizen, M. (Creator), University of Groningen, 25-Apr-2019


  • Mohd Zacaery Khalik (Creator)
  • Kasper Hendriks (Creator)
  • Jaap J. Vermeulen (Creator)
  • Menno Schilthuizen Naturalis Biodiversity Center (Creator)
  • Naturalis Biodiversity Center


The Bornean representatives of the genus Georissa (Hydrocenidae) have small, dextral, conical, calcareous shells consisting of ca. three teleoconch whorls. Our recent study on the Georissa of Malaysian Borneo has revealed high intra- and inter-specific variation in the “scaly” group (a group of species with striking scale-like surface sculpture). The present study on the “non-scaly” Georissa is the continuation of the species revision for the genus. The “non-scaly” species are also diverse in shell sculptures. This informal group comprises Georissa with subtle spiral and/or radial sculpture. The combination of detailed conchological assessment and molecular analyses provides clear distinctions for each of the species. Conchological, molecular, and biogeographic details are presented for 16 species of “non-scaly” Georissa. Three of these are new to science, namely Georissa corrugata sp. n., Georissa insulae sp. n., and Georissa trusmadi sp. n.
Date made available25-Apr-2019
PublisherUniversity of Groningen
Geographical coverageSabah, Borneo
Access to the dataset Open

    Keywords on Datasets

  • gastropods, limestone, morphology, Phylogenetics, Species Delimitation, Sabah, Sarawak, Sarawak Malaysian Borneo
Related Publications
  1. A molecular and conchological dissection of the "scaly" Georissa of Malaysian Borneo (Gastropoda, Neritimorpha, Hydrocenidae)

    Khalik, M. Z., Hendriks, K., Vermeulen, J. J. & Schilthuizen, M., 9-Jul-2018, In : Zookeys. 773, p. 1-55 55 p.

    Research output: Contribution to journalArticleAcademicpeer-review

View all (1) »

View graph of relations

ID: 82018034