Lemaitre Rafael, Vázquez-Bader Ana Rosa, Gracia Adolfo
Department of Invertebrate Zoology, National Museum of Natural History, Smithsonian Institution, 4210 Silver Hill Road, Suitland, MD 20746, USA.
Laboratorio de Ecología Pesquera de Crustáceos, Instituto de Ciencias del Mar y Limnología, UNAM, Av. Universidad # 3000, Universidad Nacional Autónoma de México, CU, Distrito Federal, 04510, México.
Zookeys. 2014 Oct 22(449):57-67. doi: 10.3897/zookeys.449.8541. eCollection 2014.
A new hermit crab species of the family Paguridae, Tomopaguropsisahkinpechensis sp. n., is described from deep waters (780-827 m) of the Gulf of Mexico. This is the second species of Tomopaguropsis known from the western Atlantic, and the fifth worldwide. The new species is morphologically most similar to a species from Indonesia, Tomopaguropsiscrinita McLaughlin, 1997, the two having ocular peduncles that diminish in width distally, reduced corneas, dense cheliped setation, and males lacking paired pleopods 1. The calcified figs on the branchiostegite and anterodorsally on the posterior carapace, and the calcified first pleonal somite that is not fused to the last thoracic somite, are unusual paguroid characters. A discussion of the affinities and characters that define this new species is included, along with a key to all five species of Tomopaguropsis.
描述了寄居蟹科（Paguridae）的一种新寄居蟹——汤姆氏深海寄居蟹（Tomopaguropsis ahkinpechensis sp. n.），它采自墨西哥湾的深水区域（780 - 827米）。这是在西大西洋发现的第二种汤姆氏深海寄居蟹，也是全球已知的第五种。新物种在形态上与来自印度尼西亚的一种寄居蟹——1997年麦克劳克林发现的汤姆氏深海寄居蟹（Tomopaguropsis crinita）最为相似，二者的眼柄都在远端变窄，角膜退化，螯足上有密集的刚毛，且雄性都没有成对的第一腹肢。鳃盖骨上以及后甲壳前背部的钙化瘤，还有未与最后一个胸节愈合的钙化第一腹节，都是寄居蟹类中不寻常的特征。文中还讨论了界定这一新物种的亲缘关系和特征，同时给出了汤姆氏深海寄居蟹所有五个已知物种的检索表。
