Vol. 59, 2020
(update: 2020.05.22; 07.06)
A New Fiddler Crab of Austruca Bott, 1973, Closely
Related to A. perplexa (H.
Milne Edwards, 1852) (Crustacea: Brachyura: Ocypodidae), from the South
Shih1,* and Joseph Poupin2
of Life Science and Research Center for Global Change Biology, National
Chung Hsing University, Taichung 402, Taiwan. *Correspondence: E-mail:
2Ecole Navale, CC 600, 29240 Brest Cedex 9, France.
E-mail: email@example.com (Poupin)
(Received 25 December 2019 / Accepted
20 May 2020)
Communicated by Benny K.K. Chan
new species of fiddler crab, Austruca
citrus n. sp. from Fiji, Wallis & Futuna, and Samoa, in the
South Pacific is described based on morphological and molecular
evidence. This species is closely related to Austruca perplexa (H. Milne
Edwards, 1852), but can be distinguished by a suite of characters,
including adult size, carapace morphology, shape and coloration of the
major chela, the ratio of major pollex length as a function of carapace
width, and male first gonopod form. The molecular evidence of the
mitochondrial 16S rDNA and cytochrome oxidase subunit I (COI) supports these morphological
Key words: Fiddler crabs, Austruca perplexa, A. citrus, New
species, 16S rDNA, Cytochrome oxidase subunit I.
Citation: Shih HT, Poupin J. 2020. A new
fiddler crab of Austruca
Bott, 1973, closely related to A.
perplexa (H. Milne Edwards, 1852) (Crustacea: Brachyura:
Ocypodidae), from the south Pacific Islands. Zool Stud 59:26. doi:10.6620/ZS.2020.59-26.