Abstract
Bruceopsis n. gen. is established for two species, Bruceopsis projectus n. gen., n. sp., and Bruceopsis guamensis n. gen., n. sp., both from Guam, Mariana Islands, in the tropical western Pacific. The new genus is characterised by having the eyes at least partly covered dorsally and laterally by orbital hoods, the latter with sharp or blunt teeth; the chelipeds equal or unequal in size, symmetrical or asymmetrical in shape, carried extended, moderately or feebly enlarged, with carpus and merus bearing rows of setae mesially, and with simple chelae, lacking a snapping mechanism on the fingers; the third to fifth pereiopods with dorsally notched dactyli; the first to fourth pereiopods with small dorsolateral coxal lobes; the second pleomere conspicuously enlarged in females; and the posteroventral angle of the sixth pleonite with a welldeveloped, sometimes projecting articulated plate. Bruceopsis n. gen. resembles Alpheopsis Coutière, 1896 in general appearance, but may be more closely related to the western Atlantic genera Coutieralpheus Anker & Felder, 2005 and Harperalpheus Felder & Anker, 2007.References
Anker, A. (2007) Pseudalpheopsis guana, n. gen., n. sp., a new alpheid shrimp from the British Virgin Islands, Caribbean Sea (Crustacea: Decapoda). Zoological Studies, 46, 428–440.
Anker, A. (2008) A worldwide review of stygobiotic and stygophilic shrimps of the family Alpheidae (Crustacea, Decapoda, Caridea). Subterranean Biology, 6, 1–16.
Anker, A. & Dworschak, P.C. (2007) Jengalpheops rufus, gen. nov., sp. nov., a new commensal alpheid shrimp from the Philippines (Crustacea: Decapoda). Zoological Studies, 46, 290–302.
Anker, A. & Felder, D.L. (2005) Description of Coutieralpheus setirostris, new genus, new species, an infaunal alpheid shrimp (Crustacea, Decapoda) from Florida, U.S.A. Crustacean Research, 34, 40–52.
Anker, A., Poddoubtchenko, D. & Wehrtmann, I.S. (2006) Leslibetaeus coibita, n. gen., n. sp., a new alpheid shrimp from the Pacific coast of Panama (Crustacea: Decapoda). Zootaxa, 1183, 27–41.
Banner, A.H. & Banner, D.M. (1960) Contributions to the knowledge of the alpheid shrimp of the Pacific Ocean. Part VI. Prionalpheus, a new genus of the Alpheidae. Pacific Science, 14, 292–298.
Banner, A.B. & Banner, D.H. (1981) Decapod Crustacea: Alpheidae. In: Résultats des campagnes MUSORSTOM, I: Philippines (18–28 mars 1976). Mémoires de l’ORSTOM, 91, 217–235.
Bauer, R.T. (1978) Antifouling adaptations of caridean shrimp: cleaning of the antennal flagellum and general body grooming. Marine Biology, 49, 69–82.
Bauer, R.T. (1989) Decapod crustacean grooming: functional morphology, adaptive value, and phylogenetic significance. In: Felgenhauer, B.E., Thistle, A.B. & Watling, L. (Eds.), Functional morphology of feeding and grooming in Crustacea. A.A. Balkema, Rotterdam, pp. 49–73.
Bracken, H.D., De Grave, S. & Felder, D.L. (2009) Phylogeny of the infraorder Caridea based on mitochondrial and nuclear genes (Crustacea: Decapoda). In: Martin J.W., Crandall, K.A. & Felder D.L. (Eds.), Decapod crustacean phylogenetics, CRC Press, Boca Raton, pp. 281–305.
Bruce, A.J. (1990) Redescriptions of five Hong Kong caridean shrimps first described by W. Simpson, 1860. In: Morton, B. (Ed.), Proceedings of the Second Marine Biological Workshop: The Marine Flora & Fauna of Hong Kong and Southern China, 2. Hong Kong University Press, Hong Kong, pp. 569–610.
Coutière, H. (1896) Note sur quelques genres nouveaux ou peu connus d'Alphéidés, formant la sous-famille des Alphéopsidés. Bulletin du Muséum national d'Histoire naturelle, 2, 380–386.
De Grave, S. & Anker, A. (2000) A new genus and new species of alpheid shrimp (Crustacea: Decapoda) from Papua New Guinea. Raffles Bulletin of Zoology, 48, 249–256.
De Grave, S. & Anker, A. (2008) Leptathanas powelli gen. nov., sp. nov., a new infaunal alpheid shrimp associated with upogebiid mudshrimps in Nigeria (Crustacea, Decapoda). Zootaxa, 1750, 43–52.
De Grave, S., Pentcheff, N.D., Ahyong, S.T., Chan, T.-Y., Crandall, K.A., Dworschak, P.C., Felder, D.L., Feldmann, R.M., Fransen, C.H.J.M., Goulding, L.Y.D., Lemaitre, R., Low, M.E.Y., Martin, J.W., Ng, P.K.L., Schweitzer,C.E., Tan, S.H., Tshudy, D. & Wetzer, R. (2009). A classification of living and fossil genera of decapod crustaceans. The Raffles Bulletin of Zoology, Suppl. 21, 1–109.
Dennis, C. & Aldhous, P. (2004) Biodiversity: a tragedy with many players. Nature, 430, 396–398.
Felder, D.L. & Anker, A. (2007) Harperalpheus pequegnatae, new genus, new species, a remarkable new shrimp from the Gulf of Mexico and Atlantic coast of the southeastern USA (Crustacea, Decapoda, Alpheidae). Systematics and Biodiversity, 5, 465–463.
Felgenhauer, B.E. & Schram, F.R. (1979) The functional morphology of grooming appendages of Palaemonetes kadiakensis Rathbun, 1902. Fieldiana, Zoology, 2, 1–17.
Kensley, B. (1988) New species and records of cave shrimps from the Yucatan Peninsula (Decapoda: Agostocarididae and Hippolytidae). Journal of Crustacean Biology, 8, 688–699.
Kensley, B. (2001) A new species of Corallichirus Manning, 1992 (Crustacea: Decapoda: Callianassidae) from Guam. Bulletin of the Biological Society of Washington, 10, 328–333.
Martin, J.W., Signorovitch, J. & Patel, H. (1998) Comparison of the carpal cleaning brush in two genera of hydrothermal vent shrimp (Crustacea, Decapoda, Bresiliidae). Journal of Morphology, 235, 31–39.
Méndez, M.G. & Wicksten, M.K. (1982) Notalpheus imarpe: a new genus and species of snapping shrimp from western South America (Decapoda: Alpheidae). Proceedings of the Biological Society of Washington, 95, 709–713.
Miya, Y. (1997) Stenalpheops anacanthus, new genus, new species (Crustacea, Decapoda, Alpheidae) from the Seto Inland Sea and the Sea of Ariake, South Japan. Bulletin of the Faculty of Arts and Sciences, Nagasaki University, 38, 145–161.
Ng, P.K.L. & Ng, N.K. (2003) Conleyus defodio, a new genus and new species of carcinoplacine crab (Crustacea: Brachyura: Goneplacidae) from deep rubble beds in Guam. Micronesica, 35/36, 431–439.
Ng, P.K.L. & Takeda, M. (2003) Atoportunus, a remarkable new genus of cryptic swimming crab (Crustacea; Decapoda; Brachyura; Portunidae), with descriptions of two new species from the Indo-West Pacific. Micronesica, 35/36, 417–430.
Powell, C.B. (1979) Three alpheid shrimps of a new genus from West African fresh and brackish waters: taxonomy and ecological zonation (Crustacea Decapoda Natantia). Revue de Zoologie Africaine, 93, 116–150.
Rafinesque, C.S. (1815) Analyse de la Nature ou Tableau de l'Univers et des corps organizes. Palerme, 224 pp.
Risso, A. (1816) Histoire naturelle des crustacés des environs de Nice. Librairie Grecque-Latine-Allemande, Paris, 175 pp.