Metadynomene tanensis
Creators: name: Published, First
Publisher: name: Zenodo
Year: 2009
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Malacostraca
Decapoda
Dynomenidae
Metadynomene
Metadynomene tanensis

description: <i>Metadynomene tanensis</i> (Yokoya, 1933) (Fig. 2a, b) <i>Dynomene tanensis</i> Yokoya, 1933: 96, fig. 38. <i>Dynomene praedator</i> — Sakai 1976: 30, fig. 17. – Naga &amp; Tsuchida 1995: 108, pl. 1, fig. 2. Not <i>Dynomene praedator</i> A. Milne-Edwards, 1879. <i>Metadynomene tanensis</i> — McLay 1999: 521, figs 4d, 6c, 7f, 9d, e, 11, 13c, e, f, 14e, 25b, 27, 28. — McLay <i>et al.</i> 2001: 964. — Ng <i>et al.</i> 2001: 6. — Guinot &amp; Quenette 2005: 284, fig. 4A, B. — McLay &amp; Ng 2005: 24. <b>Material Examined</b>. <i>East</i> <i>Cape:</i> 1 ovigerous female, 19.2 mm x 18.0 mm, 37°30’S, 179°00E, 307–340 m, <i>Taranui</i>, F 867, TAM, 2 Oct. 1968. (NIWA 48580) <b>Remarks</b>. The discovery of <i>M. tanensis</i> is the first record of the Dynomenidae in New Zealand. <i>Dynomene pilumnoides</i> is also being reported from New Zealand for the first time (see below). The systematics of this family has been reviewed by McLay (1999). The specimen was discovered in the NIWA collection, where it had been in storage for more than 30 years. The type species of <i>Metadynomene</i> McLay, 1999 is <i>Dynomene tanensis</i> Yokoya, 1933, collected off the eastern coast of Japan. The geographical distribution of this species includes Taiwan, Indonesia, New Caledonia, Loyalty Is, Chesterfield Is and Vanuatu, to which we can now add New Zealand. A large male specimen reported as “ <i>M. tanensis ”</i> by McLay (1999: 522) from the Tuamotu Archipelago, French Polynesia, probably belongs to an undescribed species. There are two other species: <i>M. crosnieri</i> McLay, 1999, from the Glorieuse Is, Indian Ocean and <i>M. devaneyi</i> (Takeda, 1977) from the Hawaiian Is and the Marquesas Is, French Polynesia. Species of this genus inhabit for the most part water between 200 and 500 m and some are associated with precious corals (<i>Corallium</i> sp.). They seem to live on rocky bottoms. Coarse sand, broken shell, rocks, <i>Glycymeris</i>, <i>Venericardia</i>, <i>Pecten</i> (Bivalvia), <i>Munida</i> (Anomura), pagurids, electric ray, octopus and ophiuroids were also collected along with the New Zealand specimen of <i>M. tanensis</i>. There is a superficial resemblance between this species and <i>Metadromia wilsoni</i> nov. comb. because both species have a dense, short, uneven tomentum covering the carapace, but they are easily distinguished because <i>M. tanensis</i> only has the last pair of legs (P5) reduced, whereas <i>M. wilsoni</i> has the last two pairs (P4 and P5) reduced, although not as much as for <i>M. tanensis</i> P5. <b>Distribution</b> <i>Metadynomene tanensis</i> is known from Taiwan, Indonesia, New Caledonia, Loyalty Is, Chesterfield Is and Vanuatu, and now from East Cape, New Zealand. Depth range is 205– 520m.
description: Published as part of <i>Published, First, 2009, New records of crabs (Decapoda: Brachyura) from the New Zealand region, including a new species of Rochinia A. Milne-Edwards, 1875 (Majidae), and a revision of the genus Dromia Weber, 1795 (Dromiidae), pp. 1-66 in Zootaxa 2111</i> on pages 11-12
description: {"references": ["Yokoya, Y. (1933) On the distribution of decapod crustaceans inhabiting the Continental Shelf around Japan, chiefly based upon the materials collected by S. S. Soyo-Maru, during the years 1923 - 30. Journal of the College of Agriculture (Tokyo), 12 (1), 1 - 226.", "Milne-Edwards, A (1879) Memoire sur les Crustaces decapodes du genre Dynomene. Annales des Sciences naturelles, Zoologie, (6), 8, 1 - 11.", "McLay, C. L. (1999) Crustacea Decapoda: Revision of the family Dynomenidae. In: Crosnier, A. (ed.), Resultats des Campagnes MUSORSTOM, vol. 20. Memoires du Museum national d'Histoire naturelle (Paris) 180, 427 - 569.", "Guinot, D. &amp; Quenette (2005) The spermatheca in podotreme crabs (Crustacea, Decapoda, Brachyura, Podotremata) and its phylogenetic implications. Zoosystema, 27 (2), 267 - 342.", "McLay, C. L. &amp; P. K. L. Ng (2005) On a collection of Dromiidae and Dynomenidae from the Philippines, with description of a new species of Hirsutodynomene McLay, 1999 (Crustacea: Decapoda: Brachyura). Zootaxa, 1029, 1 - 30.", "Takeda, M. (1977) Crabs from the Shallow Waters off Mage-jima Island, Southwest Japan. Bulletin of the National Science Museum (Tokyo), ser. A (Zool.), 3 (2), 73 - 89."]}