Tanaella prolixcauda, Larsen & Heard, 2004

Larsen, Kim & Heard, Richard, 2004, Revision of the tanaidomorphan deep-sea genus Tanaella (Crustacea: Tanaidacea), Journal of Natural History 38 (5), pp. 549-579 : 566

Tanaella prolixcauda n. sp.

(figures 9–11)

Material examined. Holotype W ( USNM 1004423 ), body length 2.4 mm, Stn W 2-6, 27°43.55∞N, 92°30.01∞W, 550 m. One W paratype ( USNM 1004424 ), same locality. Two W, Stn W 2-5, 27°43.55∞N, 92°30.14∞W, 550 m. One manca, Stn C 3-5, 27°49.6∞N, 90°07.1∞W, 841 m. One W, Stn E 3-4475-1, 28°09.22∞N, 86°24.41∞W, 819 m. One juvenile, Stn E 3-4483-3, 28°09.22∞N, 86°24.41∞W, 819 m. One W, Stn E 3-4485-5, 28°09.22∞N, 86°24.41∞W, 819 m. One W, Stn E 3C-4490-4, 28°15.48∞N, 86°36.58∞W, 847 m. One juvenile, seven mancas, Stn NB 4-1, 26°15.2711∞N, 92°23.6978∞W, 2030 m. One juvenile, Stn S 35-2, 667 m. One manca, Stn RW 4-1, 26°44.8861∞N, 95°14.7680∞W, 1570 m. One juvenile, Stn RW 2-1, 27°15.2435∞N, 95°44.6186∞W, 950 m.

Diagnosis, male. Antennule article 2 shorter than half the length of article 1. Cheliped fixed finger with pronounced proximal serration. Cheliped dactylus without proximal depression or processes. Maxilliped endites with processes. Pleopods present on all five pleonites, all with plumose feather setae. Uropods longer than combined length of pleotelson and last two pleonites. Pleotelson blunt and short (as long as combined length of only two pleonites).

Etymology. Named after the long uropod (Latin: prolix + cauda =long+tail).