title: A new species of Nebalia (Crustacea, Leptostraca) from coral reefs at Pulau Payar, Malaysia.
abstract: A new species of Leptostraca, Nebalia terazakii sp. n. is described and figured. The species was sampled from the coral reefs of Pulau Payar Marine Park, Langkawi, Malaysia. There are 32 existing species of Nebalia but Nebalia terazakii sp. n. can be distinguished from the other known species of Nebalia by the following combination of characters: the rostrum is 1.89 times as long as wide and the eyes have no dorsal papilla or lobes. Article 4 of the antennular peduncle has one short thick distal spine. The proximal article of the endopod of maxilla 2 is shorter than the distal, a feature peculiar to Nebalia terazakii sp. n., the exopod of maxilla 2 is longer than article 1 of the endopod, the posterior dorsal borders of the pleonites 6 to 7 are provided with distally sharp denticles, anal plate with prominent lateral shoulder and finally, the terminal seta of the caudal rami is 1.17 times the length of the entire rami.
authors.affiliation: Institute of Oceanography and Environment, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia; School of Marine and Environmental Sciences, Universiti Malaysia Terengganu, 21030 Kuala Terengganu, Terengganu, Malaysia.
authors.forename: B H R
authors.initials: BH
authors.lastname: Othman
authors.affiliation: Graduate School of Engineering, Soka University, Hachioji, Tokyo 192-8577, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Toda
authors.affiliation: Faculty of Education & Human Sciences, Yokohama National University, 79-2 Tokiwadai, Hodogaya, Yokohama 240-8501, Japan.
authors.forename: T
authors.initials: T
authors.lastname: Kikuchi
keywords: Leptostraca; Malaysia; Nebalia; Pulau Payar; coral reefs; new species