A new species of Emerita (Decapoda, Anomura, Hippidae) from Taiwan, with a key to species of the genus

In: Crustaceana
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  • 1 Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan

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A new species, Emerita taiwanensis sp. nov., is described from Taiwan and represents the first record of the genus from East Asia. The species differs from its congeners by having (1) a long and sharply triangular median frontal lobe, which is approximately equal in length to the lateral lobes, (2) the highest ratio of the maximum length of the merus of the 3rd maxilliped to that same segment’s maximum width, (3) a narrow and elongate P1 dactylus, combined with a ratio of the P1 dactylus length to its maximum width of approx. 2.78, (4) 1-3 spines present on the inner margin of the P1 dactylus, and (5) a peculiar colour pattern on the dorsum of the carapace. A comparison of the morphological characters of the present species with those of its congeners with a similar, elongate P1 dactylus is presented in the form of a table.

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