Marin I.N.1, Thịnh N.V.2 2024. A new mud-dwelling species of the genus Alpheus Fabricius, 1798 (Decapoda: Alpheidae) from anoxic mangrove swamps of South Vietnam // Arthropoda Selecta. Vol.33. No.4: 536–548 [in English].
1 A.N. Severtsov Institute of Ecology and Evolution of RAS, Moscow 119071 Russia.
2 Southern Branch of the Joint Vietnam-Russia Tropical Science and Technological Research Center, Ho Chi Minh, Vietnam.
Ivan Marin coralliodecapoda@mail.ru ORCID: https://orcid.org/0000-0003-0552-8456
Nguyễn Văn Thịnh thinh39b@gmail.com ORCID: https://orcid.org/0000-0002-5376-830X
* corresponding author
doi: 10.15298/arthsel.33.4.09
ABSTRACT. The article describes a new species of the genus Alpheus Fabricius, 1798 (Decapoda: Caridea: Alpheidae), referring to the “Alpheus malabaricus” species complex, which is characterized by unusually long and thin fingers of minor cheliped (pereiopod I). Alpheus cangiopalus sp.n. was found to live exclusively in highly specific shallow water muddy lagoons located in deep anoxic mangrove swamps of the Cần Giờ Mangrove Biosphere Reserve in South Vietnam. Detailed morphological comparison with Alpheus malabaricus (Fabricius, 1775) and other taxa earlier synonymized with the former species are provided. The trophic position of the new species was evaluated based on analysis of δ15N/δ13C stable isotopes, and a discussion on other ecological features of the species is also represented in the article.
KEY WORDS: Crustacea, diversity, mangroves, communities, Asia, Indo-West Pacific.