Abstract
A new genus and species of freshwater crab, Yuebeipotamon calciatile gen. n., sp. n., is described from southern China. While the carapace features are superficially similar to species of Sinopotamon Bott, 1967, Longpotamon Shih, Huang & Ng, 2016, and Tenuilapotamon Dai, Song, Li, Chen, Wang & Hu, 1984, the new genus possesses a distinctive combination of carapace, ambulatory leg, male thoracic sternal, male abdominal, and gonopodal characters that distinguish it from these and other genera. Molecular evidence derived from the mitochondrial 16S rDNA supports the establishment of a new genus.
Highlights
The South China region is diverse in freshwater crabs from the family Potamidae Ortmann, 1893
Genomic DNA was isolated from the muscle tissue of ambulatory legs by using the Tiangen universal DNA purification kit (Beijing, China) and GeneMark tissue and cell genomic DNA purification kit (Taichung, Taiwan)
A region of ~550 basepairs (= bp) of the 5’-end of the 16S gene was selected for amplification with polymerase chain reaction (PCR) using the primers 1471 and 1472 (Crandall and Fitzpatrick 1996)
Summary
The South China region is diverse in freshwater crabs from the family Potamidae Ortmann, 1893. Of this species, the 16S sequences of genera from the eastern Asian continent in Shih et al (2009), as well as the more recently described genus Minutomon Huang, Mao & Huang, 2014, were included for comparison.
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