title: A new species of pea crab of the genusSerenotheresAhyong & Ng, 2005 (Crustacea, Brachyura, Pinnotheridae) from the date musselLeiosolenusCarpenter, 1857 (Mollusca, Bivalvia, Mytilidae, Lithophaginae) from the Solomon Islands.
abstract: The pea crab genusSerenotheresAhyong & Ng, 2005 (Pinnotheridae) is currently only represented by one species,Serenotheres besutensis(Serène, 1967). A new species is now assigned to this genus, described from a date musselLeiosolenus obesusCarpenter, 1857 (Mollusca: Bivalvia: Mytilidae: Lithophaginae) collected in the Solomon Islands.Serenotheres janussp. n.differs fromSerenotheres besutensisin possessing a conspicuously broader carapace, with the lateral margins of the dorsal lamellum distinctly produced and the posterolateral part deeply concave, the dorsal lamellum being highest at the median cleft, the rostrum is relatively more prominent, the surfaces of the anterolateral margin and hepatic region are less prominently pitted and eroded, the ischiomerus of the third maxilliped is relatively more rectangular, and the P2 merus is proportionately longer.
authors.affiliation: Lee Kong Chian Natural History Museum, Faculty of Science, National University of Singapore, 2 Conservatory Drive, Singapore 117377, Republic of Singapore.
authors.forename: Peter K L
authors.initials: PK
authors.lastname: Ng
authors.affiliation: Department of Invertebrate Zoology, U.S. National Museum of Natural History, Smithsonian Institution, Washington DC 20013, USA.
authors.forename: Chistopher
authors.initials: C
authors.lastname: Meyer
keywords: Pinnotheridae; Serenotheres janus; Solomon Islands; new species; symbiotic crab; taxonomy