Sunday, May 13, 2018

[Crustacea • 2018] Refining the Genus Rochinia A. Milne-Edwards, 1875 (Crustacea: Brachyura: Epialtidae): Reinstatement of Scyramathia & Anamathia, and Minyorhyncha, A New Genus for Amathia crassa A. Milne-Edwards, 1879, with Notes on Its Ontogeny

Minyorhyncha crassa (A. Milne-Edwards, 1879)

in Tavares & Santana, 2018. 


The genus Scyramathia A. Milne-Edwards, 1880 (type species Amathia carpenteri Norman in Wyville Thomson, 1873) is herein removed from the synonymy of Rochinia A. Milne-Edwards, 1875 (type species R. gracilipes A. Milne-Edwards, 1875) and a new genusMinyorhyncha, is established for Amathia crassa A. Milne-Edwards, 1879, a species previously placed in the genus Rochinia. The genus Anamathia Smith, 1885 (type species Amathia rissoana Roux, 1828), widely regarded as a synonym of Rochinia, is confirmed as a valid genus. The morphological differences between Rochinia (as revealed by its type species), AnamathiaScyramathia and Minyorhyncha are discussed and illustrated. The strong ontogenetic changes in Minyorhyncha crassa n. gen., n. comb. are also discussed and illustrated. Lectotypes are selected for Rochinia gracilipes A. Milne-Edwards, 1875, and Amathia agassizii Smith, 1882, a junior synonym of Minyorhyncha crassa n. gen., n. comb.

Keywords: ontogeny, morphology, taxonomy, Eubrachyura, spider crabs, deep-water crabs, Crustacea

Minyorhyncha crassa (A. Milne-Edwards, 1879)

Marcos Tavares and William Santana. 2018. Refining the Genus Rochinia A. Milne-Edwards, 1875: Reinstatement of Scyramathia A. Milne-Edwards, 1880 and Anamathia Smith, 1885, and A New Genus for Amathia crassa A. Milne-Edwards, 1879, with Notes on Its Ontogeny (Crustacea: Brachyura: Epialtidae). Zootaxa. 4418(3); 201–227.  DOI:  10.11646/zootaxa.4418.3.1