A New Record of the Varunid Crab, Varuna yui (Decapoda: Varunidae), from Korea

The varunid crab, Varuna yui Hwang & Takeda, 1986, is known as widely distributed in the Southeast Asian region. Three specimens of varunid crabs were collected near the estuary of the river from Korea and identified as V. yui. Varuna yui could be distinguished from the other congeneric species, V. litterata (Fabricius, 1798), by having a more extended mesial lobe on the distal region of the male first gonopod. In this paper, morphological diagnosis and illustrations of the newly collected V. yui are provided. The specimens examined herein were deposited in the National Marine Biodiversity Institute of Korea and Nakdonggang National Institute of Biological Resources.