Bruce Niel L, Svavarsson JÖrundur
Museum of Tropical Queensland, Queensland Museum, 70-102, Flinders Street, Townsville, Queensland 4810, Australia; Water Research Group, North-West University, Private Bag X6001, Potchefstroom, 2520, South Africa..
Zootaxa. 2018 Mar 20;4399(1):101-118. doi: 10.11646/zootaxa.4399.1.6.
Three new species of Tridentella Richardson, 1905 are described from the New Caledonia region. All three species are smooth bodied or largely smooth bodied, and all were collected from the shelf around New Caledonia at depths from 150-760 metres. Tridentella palmata sp. nov. is characterised by pereopod 4 having numerous large robust setae on the carpus and an exceptionally long dactylus (7.0 times as long as proximal width); Tridentella katlae sp. nov. is the only species in the genus with medially united eyes that fill the head in dorsal view; Tridentella magna sp. nov. is the largest species in the genus (36 mm) and can be identified by the head having an anterior submarginal ridge and three submarginal tubercles on the poster margin. Tridentella takedai Nunomura 2006 (off Arasaki, Hokusuka-Shi, Kyushu, Japan) is formally transferred to Alcirona Hansen, 1905, forming Alcirona takedai (Nunomura, 2006) comb. nov.
本文描述了采自新喀里多尼亚地区的三种1905年命名的三叉戟蟹属（Tridentella Richardson）新物种。这三个物种的身体均光滑或大部分光滑，均采自新喀里多尼亚周围陆架150 - 760米深处。新种掌状三叉戟蟹（Tridentella palmata sp. nov.）的特征是第四步足腕节上有许多大而粗壮的刚毛，指节异常长（是近端宽度的7.0倍）；新种卡特拉三叉戟蟹（Tridentella katlae sp. nov.）是该属中唯一一种两眼在中线愈合，从背面观时占据整个头部的物种；新种大三叉戟蟹（Tridentella magna sp. nov.）是该属中最大的物种（36毫米），可通过头部具有前缘亚边缘脊和后缘三个亚边缘瘤来识别。2006年在日本九州北九州市荒崎近海发现的武田三叉戟蟹（Tridentella takedai Nunomura 2006）被正式转移至1905年命名的阿尔西罗纳蟹属（Alcirona Hansen），形成新组合阿尔西罗纳武田蟹（Alcirona takedai (Nunomura, 2006) comb. nov.） 。
