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Taxonomy notes and new occurrence data of four species of atyid shrimp (Crustacea: Decapoda: Atyidae) in Vietnam, all described from China

Citation

Tu D V (2021). Taxonomy notes and new occurrence data of four species of atyid shrimp (Crustacea: Decapoda: Atyidae) in Vietnam, all described from China. Biodiversity Data Journal. Checklist dataset https://doi.org/10.3897/bdj.9.e70289 accessed via GBIF.org on 2025-07-09.

Description

Freshwater shrimp of the family Atyidae De Haan, 1849 have been studied in Vietnam for more than a century. A total of 24 species of atyid shrimps from the genera Caridina H. Milne Edwards, 1837, Neocaridina Kubo, 1938, Atyopsis Chace, 1983 have been recorded from Vietnam. With 22 species, the majority are from the genus Caridina. In 2013, Karge and Klotz mentioned the occurrence of four yet undescribed species belonging to Paracaridina Liang, Guo & Tang, 1999 in Vietnam without taxonomic details.In general, studies of freshwater atyids in Vietnam are limited and most Vietnamese taxa await a taxonomic revision. The available data do not fully reflect their estimated species diversity in the country and distribution data are deficient. Here, we focus on four species of atyid shrimps from two genera, viz. Caridina cantonensis Yu, 1938, C. lanceifrons Yu, 1936, C. serrata Stimpson, 1860 and Neocaridina palmata (Shen, 1948), all described from China and have been reported to occur in Vietnam. The previous reports on the occurrence of these species in Vietnam are largely unreliable due to taxonomic confusion. To contribute to the knowledge of these taxa, we provide the first verified distribution records of the four species in the country with some taxonomic remarks.This study shows the first taxonomically-verified distribution data of four atyid shrimp species originally described from China, but also reported from Vietnam, albeit under various species names and, in some cases, erroneously. These data allow the first meaningful discussion of the distribution in light of the reproductive strategy of these four species and, in conjunction with the taxonomic remarks, will contribute to the knowledge of these taxa. As a result of this research and data from previous studies, we now consider all four species as widespread and non-endemic, but land-locked (with a complete freshwater life cycle). In Vietnam, all four species are confined to the northern half of the country. Beyond Vietnam, we provide the first records for Caridina lanceifrons from southern Thailand, which suggests a major sampling gap in Indochina.

Taxonomic Coverages

Geographic Coverages

Bibliographic Citations

Contacts

Do Van Tu
originator
position: Mr
Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology
18 Hoang Quoc Viet, Cau Giay, Ha Noi
VN
email: dovantu.iebr@gmail.com
Do Van Tu
metadata author
position: Mr
Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology
18 Hoang Quoc Viet, Cau Giay, Ha Noi
VN
email: dovantu.iebr@gmail.com
Do Van Tu
administrative point of contact
position: Mr
Institute of Ecology and Biological Resources, Vietnam Academy of Science and Technology
18 Hoang Quoc Viet, Cau Giay, Ha Noi
VN
email: dovantu.iebr@gmail.com
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