On Thaicypris panhai gen. et sp. nov., a new herpetocypridine ostracod (Crustacea: Ostracoda: Cyprididae) from Thailand

Keywords: Herpetocypridini, crustacean, taxonomy, biodiversity, Southeast Asia


A new genus, Thaicypris gen. nov., in the tribe Herpetocypridini Kaufmann, 1900 of the subfamily Herpetocypridinae Kaufmann, 1900 is established to accommodate a new species from Thailand. The present contribution deals with the description of a new genus and species, Thaicypris panhai gen. et sp. nov., which is mainly characterized by the distinctive and raised, inwardly displaced selvage at the postero-ventral part of the right valve (RV) that is not parallel to the valve margin, the absence of an anterior inner list on the RV, the prominent and elevated double inner list on the posterior part of the left valve, the small and three-segmented Rome organ on the first antenna (A1), the spatulated terminal segment of the maxillular (Mx1) palp, the slender caudal ramus (CR) with long and thin Sp seta, the presence of basal triangle on the CR attachment, and the pointed projection at the terminal segment base of the prehensile palps. The hemipenis of the new genus and species is outstanding, especially the medial lateral shield which has a long, beak-shaped protrusion on the distal part. The discovery of this Thai taxon is the first record of the tribe Herpetocypridini in Thailand and the second species of the tribe in Southeast Asia.


Broodbakker N.W. & Danielopol D.L. 1982. The chaetotaxy of Cypridacea (Crustacea, Ostracoda) limbs: proposals for a descriptive model. Bijdragen tot de Dierkunde 52 (2): 103–120. https://doi.org/10.1163/26660644-05202003

Cohuo-Durán S., Elías-Gutiérrez M. & Karanovic I. 2013. On three new species of Cypretta Vávra, 1895 (Crustacea: Ostracoda) from the Yucatan Peninsula, Mexico. Zootaxa 3636 (4): 501–524. https://doi.org/10.11646/zootaxa.3636.4.1

De Deckker P. 1981. Ostracoda from Australian inland waters – notes on taxonomy and ecology. Proceedings of the Royal Society of Victoria 93 (1): 4–85.

Gonzalez Mozo M.E., Martens K. & Baltanas A. 1996. Taxonomic revision of European Herpetocypris Brady and Norman, 1889 (Crustacea, Ostracoda). Bulletin van het Koninklijk Belgisch Instituut voor Natuurwetenschappen, Biologie 66: 93–132.

Higuti J., Meisch C. & Martens K. 2009. On Paranacypris samambaiensis gen. nov., sp. nov. (Crustacea, Ostracoda), the first South American psychrodromid from the alluvial valley of the Upper Paraná River, Brazil. Journal of Natural History 43 (13–14): 769–783. https://doi.org/10.1080/00222930802702506

Jocque M., Brendonck L., Riddoch B.J. & Martens K. 2010. On Amphibolocypris arida sp. nov. (Crustacea, Ostracoda), from rock pools in Botswana (southern Africa). Zootaxa 2408 (1): 47–58. https://doi.org/10.11646/zootaxa.2408.1.3

Martens K. 1987. Homology and functional morphology of the sexual dimorphism in the antenna of Sclerocypris Sars, 1924 (Crustacea, Ostracoda, Megalocypridinae). Bijdragen tot de Dierkunde 57 (2): 183–190. https://doi.org/10.1163/26660644-05702003

Martens K. 1997. Two new crenobiont ostracod genera (Crustacea, Ostracoda, Herpetocypridinae) from Africa and Asia Minor, with the description of a new species from dolomitic springs in South Africa. South African Journal of Science 93: 542–554.

Martens K. 2001. Taxonomy of the Herpetocypridinae (Ostracoda, Cyprididae). Crustaceana 74 (3): 295–308. https://doi.org/10.1163/156854001505532

Meisch C. 2000. Freshwater Ostracoda of Western and Central Europe. In: Schwoerbel J. & Zwick P. (eds) Süßwasserfauna von Mitteleuropa vol. 8 (3). Spektrum Akademischer Verlag, Heidelberg, Berlin.

Meisch C., Smith R.J. & Martens K. 2019. A subjective global checklist of the extant non-marine Ostracoda (Crustacea). European Journal of Taxonomy 492: 1–135. https://doi.org/10.5852/ejt.2019.492

Moonchaisook K. & Savatenalinton S. 2020. Redescriptions of Stenocypris major major (Baird, 1859) and Stenocypris major sketi Petkovski & Meisch, 1996 (Ostracoda: Crustacea), with discussion on their taxonomic position. Zootaxa 4786 (4): 497–515. https://doi.org/10.11646/zootaxa.4786.4.3

Savatenalinton S. 2015. On three new species of non-marine ostracods (Crustacea: Ostracoda) from Northeast Thailand. Zootaxa 3914 (3): 275–300. https://doi.org/10.11646/zootaxa.3914.3.3

Savatenalinton S. 2017a. A new genus and four new species of subfamily Cyclocypridinae (Crustacea, Ostracoda) from Thailand. Zootaxa 4243 (2): 329–365. https://doi.org/10.11646/zootaxa.4243.2.4

Savatenalinton S. 2017b. Siamopsis gen. nov. and five new species of the subfamily Cypridopsinae Kaufmann, 1900 (Crustacea: Ostracoda) from Thailand. European Journal of Taxonomy 384: 1–39. https://doi.org/10.5852/ejt.2017.384

Savatenalinton S. 2018. Two new species of Cypretta Vávra, 1895 (Crustacea, Ostracoda) from Thailand and a discussion of genus. Zootaxa 4532 (4): 483–502. https://doi.org/10.11646/zootaxa.4532.4.2

Savatenalinton S. 2021. Two new species of Cypricercinae McKenzie, 1971 (Crustacea, Ostracoda) from Thailand. European Journal of Taxonomy 733: 19–41. https://doi.org/10.5852/ejt.2021.733.1217

Savatenalinton S. & Martens K. 2009. Generic revision of Cypricercinae McKenzie, 1971 (Crustacea, Ostracoda), with the description of three new genera and one new species and a phylogenetic analysis of the subfamily. Hydrobiologia 632 (1): 1–48. https://doi.org/10.1007/s10750-009-9826-5

Savatenalinton S. & Martens K. 2010. On the subfamily Cypricercinae McKenzie, 1971 (Crustacea, Ostracoda) from Thailand, with the description of six new species. Zootaxa 2379 (1): 1–77. https://doi.org/10.11646/zootaxa.2379.1.1

Savatenalinton S. & Suttajit M. 2016. A checklist of recent non-marine ostracods (Crustacea: Ostracoda) from Thailand, including descriptions of two new species. Zootaxa 4067 (1): 1–34. https://doi.org/10.11646/zootaxa.4067.1.1

Scharf B., Meisch C., Kulkoyluoglu O. & Yavuzatmaca M. 2020. Stenocypria fischeri (Lilljeborg, 1883), a poorly known freshwater ostracod (Crustacea, Ostracoda). Bulletin de la Société des Naturalistes luxembourgeois 122: 217−238.

Shearn R., Halse S., Koenders A., Schön I. & Martens K. 2014. Redescription of six species of Ilyodromus Sars, 1894 (Crustacea, Ostracoda, Cyprididae) from New Zealand and Eastern Australia. Zootaxa 3878 (2): 101–145. https://doi.org/10.11646/zootaxa.3878.2.1

Shearn R., Schön I., Martens K., Halse S., Krawiec J. & Koenders A. 2017. Patterns of genetic divergence in the Ilyodromus amplicolis lineage (Crustacea, Ostracoda), with descriptions of three new species. Zootaxa 4318 (1): 1–46. https://doi.org/10.11646/zootaxa.4318.1.1

Smith R.J. & Matzke-Karasz R. 2008. The organ on the first segment of the cypridoidean (Ostracoda, Crustacea) antennule: morphology and phylogenetic significance. Senckenbergiana Lethaea 88 (1): 127–140. https://doi.org/10.1007/BF03043984

Smith R.J., Janz H. & Okubo I. 2011. Recent Cyprididae and Ilyocyprididae (Crustacea: Ostracoda) from Lake Biwa, Japan, including a summary of the lake’s ostracod fauna. Zootaxa 2874 (1): 1–37. https://doi.org/10.11646/zootaxa.2874.1.1

Victor R. & Fernando C.H. 1981. A new species of Ilyodromus Sars (Crustacea, Ostracoda) from the Philippines. Zoologica Scripta 10 (4): 255–257. https://doi.org/10.1111/j.1463-6409.1981.tb00501.x

How to Cite
Savatenalinton  , S. (2022). On Thaicypris panhai gen. et sp. nov., a new herpetocypridine ostracod (Crustacea: Ostracoda: Cyprididae) from Thailand. European Journal of Taxonomy, 787(1), 86–103. https://doi.org/10.5852/ejt.2021.787.1617
Research article