Zoological Studies

Vol. 58, 2019

(update: 2019.12.04; 12.16)

Three New Species and Two New Records of Parasesarma De Man, 1895 (Crustacea: Brachyura: Sesarmidae) from Taiwan and the Philippines from Morphological and Molecular Evidence

Jheng-Jhang Li1,2, Hsi-Te Shih3,*, and Peter K. L. Ng4


1Department of Marine Biotechnology and Resources, National Sun Yat-sen University, 70 Lienhai Road, Kaohsiung 80424, Taiwan
2East Peak Ecological Consultants, Inc., 22 Wanggong Road, Kaohsiung 83249, Taiwan
3Department of Life Science and Research Center for Global Change Biology, National Chung Hsing University, 250, Kuo Kuang Road, Taichung 402, Taiwan. *Correspondence: E-mail: htshih@dragon.nchu.edu.tw
4Lee Kong Chian Natural History Museum, National University of Singapore, 2 Conservatory Drive, Singapore 117546, Republic of Singapore

Received 16 September 2019 / Accepted 28 November 2019
Communicated by Benny K.K. Chan

Three new coastal crabs, Parasesarma aurifrons n. sp., P. sanguimanus n. sp. and P. gemmatum n. sp. (Sesarmidae), are described from Taiwan and the Philippines. Parasesarma aurifrons is morphologically similar to P. ungulatum (H. Milne Edwards, 1853), P. liho Koller, Liu & Schubart, 2010, and P. obliquefrons (Rathbun, 1924); P. sanguimanus most closely resembles P. cricotus (Rahayu & Davie, 2002); and P. gemmatum is related to P. lenzii (De Man, 1895), but they can be distinguished by a suite of characters, including the structures of the chelipeds, gonopods and vulvae. The three new species are also supported by genetic data from the mitochondrial cytochrome oxidase subunit I (COI). Two species, P. lenzii and P. dumacense (Rathbun, 1914), are also recorded from Taiwan for the first time. The poorly known P. obliquefrons (Rathbun, 1924) from Samoa is figured for the first time as part of the comparisons and its taxonomically important gonopod structures are illustrated.

Key words: COI, Taxonomy, New species, Parasesarma aurifrons, P. sanguimanus, P. gemmatum, P. obliquefrons, Morphology, Mitochondrial cytochrome oxidase subunit I.

Citation: Li JJ, Shih HT, Ng PKL. 2019. Three new species and two new records of Parasesarma De Man, 1895 (Crustacea: Brachyura: Sesarmidae) from Taiwan and the Philippines from morphological and molecular evidence. Zool Stud 58:40. doi:10.6620/ZS.2019.58-40.