Abstract
A rare species of pandalid shrimp, Heterocarpus nesisi Burukovsky, 1986, is rediscovered in deep water off western Mexico. Previous to this capture, this species was known only from the holotype, a mature male captured at 800 m depth, originally described in the genus Heterocarpus and later transferred to Plesionika. A second, unconfirmed record, was provided in 1989: a female captured at 898 m near the southern tip of the Baja California Peninsula. Heterocarpus nesisi is redescribed and appendages are illustrated. The general morphology of this species makes it difficult to fit within Heterocarpus or Plesionika, and a new genus, Heteronika gen. nov., is proposed to accommodate it. Heteronika nesisi is associated with the lower boundary of the Oxygen Minimum Zone occurring off western Baja California.
References
Burukovsky, R.N. (1986) A new shrimp species from the genus Heterocarpus (Crustacea: Decapoda: Pandalidae) and a brief review of species of the genus. Byulleten’Moskovskogo Obshchestva Ispytatelei Prirody, Otdel Biologicheskii, 91, 62‒73. [in Russian]
Chace, F.A. (1989) The holotype of Heterocarpus alexandri A. Milne-Edwards (Crustacea: Decapoda: Pandalidae). Proceedings of the Biological Society of Washington, 102 (1), 84‒88.
Chan, T.Y. & Crosnier, A. (1997) Crustacea Decapoda: Deep-sea shrimps of the genus Plesionika Bate, 1888 (Pandalidae) from French Polynesia, with descriptions of five new species. Résultats des Campagnes MUSORSTOM, 18, 187‒234.
Crosnier, A. (1988) Sur les Heterocarpus (Crustacea, Decapoda, Pandalidae) du sud-ouest de l'océan Indien. Remarques sur d'autres espèces ouest-pacifiques du genre et description de quatre taxa nouveaux. Bulletin du Muséum national d'Histoire naturelle, Paris, Series 10, Section A, 1, 57‒103.
De Grave, S. & Fransen, C.H.J.M. (2011) Carideorum Catalogus: The recent species of the Dendrobranchiate, Stenopodidean, Procarididean and Caridean shrimps (Crustacea: Decapoda). Zoologische Mededelingen Leiden, 85, 195–588.
Flores, J., Hendrickx, M.E. & Chapa-Saldaña, H. (2004) Capturas del camarón mancha blanca, Pandalus platyceros Brandt, 1851 (Caridea: Pandalidae), en la costa oeste de Baja California, México, con una breve revisión de su biología y su pesca. In: Hendrickx, ME. (Ed.), Contributions to the Study of East Pacific Crustaceans 3. [Contribuciones al Estudio de los Crustáceos del Pacífico Este 3]. Instituto de Ciencias del Mar y Limnología, UNAM, Mexico City, pp. 199‒211.
Hendrickx, M.E. (1993) Crustáceos decápodos del Pacífico Mexicano. In: Salazar-Vallejo, S.I. & González, N.E. (Eds.), Biodiversidad Marina y Costera de México. Comisión Nacional para el Estudio de la Biodiversidad and CIQRO, Mexico, pp. 271‒318.
Hendrickx, M.E. (2012) Pandalid shrimp (Crustacea: Decapoda: Caridea: Pandalidae) collected during the TALUD XIV cruise in the Gulf of California, Mexico, and rediscovery of Plesionika carinirostris Hendrickx, 1989. Cahiers de Biologie Marine, 53, 495‒504.
Hendrickx, M.E. (2016) Plesionika sanctaecatalinae Wicksten, 1983 (Crustacea Decapoda Caridea Pandalidae) from off the west coast of Pacific Mexico. Zootaxa, 4111 (4), 492‒500.
https://doi.org/10.11646/zootaxa.4111.4.8
Hendrickx, M.E. & Wicksten, M.K. (1989) Los Pandalidae (Crustacea: Caridea) del Pacífico mexicano, con una clave para su identificación. Caldasia, Colombia, 16 (76), 71‒86.
Poupin, J. (1996) Atlas des Crustacés marins profonds de Polynésie Française. Récoltes du navire Marara (1986/1996). SMSRB, Montlhéry, 69 pp.
Wicksten, M.K. & Hendrickx, M.E. (2003) An updated checklist of benthic marine and brackish water shrimps (Decapoda: Penaoidea, Stenopodidea, Caridea) from the Eastern Tropical Pacific. In: Hendrickx M.E. (Ed.), Contributions to the Study of East Pacific Crustaceans 2. [Contribuciones al Estudio de los Crustáceos del Pacífico Este 2]. Instituto de Ciencias del Mar y Limnología, UNAM, Mexico City, pp. 49‒76.