Abstract
A new species of pontoniine shrimp, Leptomenaeus nhatrangensis sp. nov., is described and illustrated. This new species is the second representative of the genus. It is distinguishable from L. dolichosternum (Okuno and Mitsuhashi 2003) by the straight dorsal outline of the carapace and rostrum (1), by the rostrum overreaching the basal antennular peduncle (2), a subacute lower orbital angle (3), serrate cutting edges on the first pereiopod chela (4), fingers of the second pereiopod chela not markedly longer than palm (5), and the sixth abdominal segment not distinctly longer than postorbital carapace length (6). A single specimen of this new species was found in shallows of the Nhatrang Bay, southeastern Vietnam, on the lower surface of a large boulder.References
Bruce, A.J. (1969) Preliminary descriptions of sixteen new species of the genus Periclimenes Costa, 1844 (Crustacea, Decapoda, Natantia, Pontoniinae). Zoologische Mededelingen, Leiden 43, (20), 253–278.
Bruce, A.J. (1971) Records of some rare pontoniid shrimps from Australian waters, with remarks upon the mouthparts of some species of the genus Periclimenes Costa, 1844. Zoologische Verhandelingen, Leiden 114, 1–33.
Bruce, A.J. (1977) Notes on some Indo-Pacific Pontoniinae, XXIX. Epipontonia spongicola, gen. nov., n. sp. from Wasin Island, Kenya. Crustaceana 32, 304–315.
Bruce, A.J. (1980) Notes On Some Indo-Pacific Pontoniinae, XXXII. The occurrence of Paratypton siebenrocki Balss on la Réunion (Decapoda, Caridea). Crustaceana 38, 237–246.
Bruce, A.J. (1990) A new cnidarian associated palaemonid shrimp from Port Essington, Cobourg Peninsula, Australia. Indo-Malayan Zoology 6, 29–243.
Bruce, A.J. (2003) Periclimenes species (Crustacea: Decapoda: Pontoniinae) from Far North Queensland. Memoirs of the Queensland Museum 49, 115–122.
Bruce, A.J. (2005) Pontoniine shrimps from Papua New Guinea, with designation of two new genera, Cainonia and Colemonia (Crustacea: Decapoda: Palaemonidae). Memoirs of the Queensland Museum 51, 333–383.
Bruce, A.J. (2006) A new genus, Leptomenes, for the pontoniine shrimp Periclimenes dolichosternum Okuno & Mitsuhashi, 2003. (Crustacea: Decapoda: Palaemonidae). Cahiers de Biologie Marine 47, 223–225.
Bruce, A.J. (2007) Leptomenaeus gen. nov., a new name for Leptomenes Bruce, 2006 (Crustacea: Decapoda: Pontoniinae). Cahiers de Biologie Marine 48, 411–412.
Bruce, A.J. (2008) Periclimenes aqabai sp. nov, a further species of the aesopius species group (Caridea: Pontoniinae) from the Red Sea. Zootaxa 1682, 27–32.
De Grave, S. (2000) Caridean shrimps (Crustacea, Decapoda) from Hansa Bay, Papua New Guinea: Palaemonidae and Gnathophyllidae. Bulletin de l'Institut Royal des Sciences Naturelles de Belgique (Biologie) 70, 119–148.
Ďuriš, Z., Horká, I. & Marin, I. (2008) Periclimenes sulcatus sp. nov., a new pontoniine shrimp (Crustacea: Decapoda: Palaemonidae) from Vietnam. Zootaxa, 1860, 35–50.
Fransen, C.H.J.M. (2002) Taxonomy, phylogeny, historical biogeography, and historical ecology of the genus Pontonia Latreille (Crustacea, Decapoda, Caridea, Palaemonidae). Zoologische Verhandelingen, Leiden 336, 1–433, pls 1–19.
Holthuis, L.B. (1951) A general revision or the Palaemonidae (Crustacea Decapoda Natantia) of the Americas. 1. The sub-families Euryrhynchinae and Pontoniinae. Los Angeles, University of Southern California Press, 332 p.
Kawamoto, T. & Okuno, J. (2003) Shrimps and crabs of Kume Island, Okinawa. Hankyu Communications Co, Ltd, Japan, 109 pp.
Marin, I.N. & Chan, T.Y. (2006) Two new genera and a new species of crinoid-associated pontoniine shrimps (Decapoda: Caridea: Palaemonidae). Journal of Crustacenan Biology 26, 524–539.
Okuno, J. (2002) A new species of the ‘Periclimenes aesopius species group’ (Decapoda: Palaemonidae: Pontoniinae) from the Ryukyu Islands, southern Japan. Bulletin of the National Science Museum, Tokyo (A) 28, 4, 211–222.
Okuno, J. (2004) Periclimenes speciosus, a new species of anthozoan associated shrimp (Crustacea: Decapoda: Palaemonidae) from southern Japan. Zoological Science 21, 865–875.
Okuno, J. & Mitsuhashi, M. (2003) A new species of the genus Periclimenes Costa, 1844 (Crustacea: Decapoda: Palaemonidae) from the Ryukyu Islands, Japan. Proceedings of the Biological Society of Washington 116, 487–496.