Abstract
Two new tanaidomorphan tanaidaceans, Aparatanais hawaiensis, sp. nov. and Metatanais spinipropodus, sp. nov. represent the first members of the Family Paratanaidae to be described from the Hawaiian Islands. Aparatanais hawaiensis is distinguished from the other species of the genus by the setation of the antenna, maxilliped, chela, and pereopods. Metatanais spinipropodus is distinguished from the other three members of its genus by its chela having a strongly developed, chisel-like, spiniform seta on the inner face of propodus near the sub-distal margin of the fixed finger. The Hawaiian occurrence of M. spinipropodus extends the range for the genus Metatanais well-eastward into the mid-Pacific Ocean. This study presents the first description of a male attributable to the genus Aparatanais.
References
Bird, G.J. (2015) Tanaidacea (Crustacea: Peracarida) of the Kermadec Biodiscovery Expedition 2011, with a new sub-family of Paratanaidae: Metatanainae. Bulletin of the Auckland Museum, 20, 369–404.
Bird, G.J. & Bamber, R.N. (2013) New littoral, shelf, and bathyal Paratanaidae (Crustacea: Peracarida: Tanaidacea) from New Zealand, with descriptions of three new genera. Zootaxa, 3676 (1), 1–71.
http://dx.doi.org/10.11646/zootaxa.3676.1.1
Bird, G.J. & Larsen, K. (2009). Tanaidacean phylogeny – the second step: the basal paratanaoidean families (Crustacea: Malacostraca). Arthropod Systematics & Phylogeny, 67 (2), 137–158.
Błażewicz-Paszkowycz, M. & Zemko, K. (2009) A new species of Metatanais Shiino, 1952 (Crustacea, Tanaidacea, Paratanaoidea) from Australian coral reefs, with a redefinition of the genus. In: Bruce, N. (Ed.), Advances in the taxonomy and biogeography of Crustacea in the Southern Hemisphere. ZooKeys, 18, 129–141.
http://dx.doi.org/10.3897/zookeys.18.114David, S.E. & Heard, R.W. (2015) Cryptapseudes leroyi, a new species of apseudomorphan tanaidacean (Crustacea: Peracarida: Metapseudidae) from the Hawaiian archipelago. Pacific Sciences, 69 (2) 279−289.
http://dx.doi.org/10.2984/69.2.10Dojiri, M. & Sieg, J. (1997) The Tanaidacea. In: Blake, J.A. & Scott, P.H. (Eds.), Taxonomic Atlas of the Benthic Fauna of the Santa Maria Basin and Western Santa Barbara Channel. Vol. 11. The Crustacea Part 2. The Isopoda, Cumacea and Tanaidacea. Santa Barbara Museum of Natural History, Santa Barbara, CA, pp. 181–278.
Edmondson, C.H. (1933) Reef and shore fauna of Hawaii. 1st ed. Bernice P. Bishop Museum. Special Publication, 22.
Guţu, M. & Ramos, G.E. (1995) Tanaidaceans (Crustacea, Peracarida) from the waters of Colombian Pacific with the description of two new species. Travaux du Muséum National d´Histoire naturelle "Grigore Antipa", 35, 29–48.
Lang, K. (1973) Taxonomische und phylogenetische Untersuchungen über die Tanaidaceen (Crustacea). 8. Die Gattungen Leptochelia Dana, Paratanais Dana, Heterotanais G.O. Sars und Nototanais Richardson. Dazu einige Bermerkungnen über die Monokonophora und ein Nachtrag. Zoologica Scripta, 2, 197–229.
http://dx.doi.org/10.1111/j.1463-6409.1974.tb00752.x
Larsen, K. (2001) Morphological and molecular investigation of polymorphism and cryptic species in tanaid crustaceans: implications for tanaid systematics and biodiversity estimates. Zoological Journal of the Linnean Society, 131, 353−379.
http://dx.doi.org/10.1111/j.1096-3642.2001.tb02241.xLarsen, K. (2003) Proposed new standardized anatomical terminology for the Tanaidacea (Peracarida). Journal of Crustacean Biology, 23 (3), 644−661.
http://dx.doi.org/10.1651/c-2363Larsen, K. & Wilson, G.D.F. (2002) Tanaidacean phylogeny, the first step: the superfamily Paratanaoidea. Journal of Zoological Systematics and Evolutionary Research, 40, 205–222.
http://dx.doi.org/10.1046/j.1439-0469.2002.00193.x
Larsen, K., Nagaoka, R. & Froufe, E. (2012) Tanaidacea (Crustacea) from Macaronesia III. The shallow-water Tanaidomorpha from the Cape Verde archipelago. Zootaxa, 3498, 24–44.
Morales-Núñez, A.G., Larsen, K. & Cooke, W.J. (2016) Oahutanais makalii, a new genus and species of colletteid tanaidacean (Crustacea, Peracarida) from shelf-waters off Hawaii, with a taxonomic key. Zoosystematic and Evolution, 92 (1), 1–12.
http://dx.doi.org/10.3897/zse.92.5581Richardson, H. (1903) Isopods collected in the Hawaiian Islands by the U. S. Steamer Albatross. Bulletin of the United States Fish Commission, 23 (3), 47–54.
Shiino, S.M. (1952) A new genus and two new species of the order Tanaidacea found at Seto. Publications of the Seto Marine Biological Laboratory, II (2), 14–27.
Nobili, G. (1906) Diagnoses préliminaires de Crustacés, Décapodes et Isopodes nouveaux recueillis par M. le Dr. G. Seurat aux îles Touamotou. Bulletin du Muséum National d´Histoire Naturelle, 12 (12), 256–270.
http://dx.doi.org/10.5962/bhl.part.4097Sieg, J. (1976) Zum Natürlichen System der Dikonophora Lang (Crustacea, Tanaidacea). Zeitschrift für Zoologische Systematik und Evolutionsforschung, 14, 177–198.
http://dx.doi.org/10.1111/j.1439-0469.1976.tb00936.xSieg, J. (1981) A new species of the genus Paratanais (Crustacea: Tanaidacea), P. spinanotandus, from Seamount Vema. Proceedings of the Biological Society of Washington, 94, 1271–1278.
Tzeng, Y-W. & Hsueh, P-W. (2014) Two new species of Tanaidacea (Crustacea: Peracarida) from Taiwan. Zootaxa, 3802 (1), 51–64.
http://dx.doi.org/10.11646/zootaxa.3802.1.4