Tanaella mclellandi, 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 : 552-557

Tanaella mclellandi n. sp

(figures 1–4)

Material examined. Non-ovigerous X holotype ( USNM 1004420), body length 2.6 mm, Stn E3B-4492-6, 28°07.06∞N, 86°19.22∞W, 858 m. One non-ovigerous X paratype ( USNM 1004421), body length 2.3 mm, Stn E2-4455-5, 28°16.50∞N, 86°14.40∞W, 618 m. One W paratype ( USNM 1004422), body length 2.0 mm, Stn E2B-4441-3, 28°18.48∞N, 86°18.11∞W, 625 m. Seven adult W and four juvenile W, Stn WC4-5420-2, 27°43.28∞N, 92°08.08∞W, 545 m. One W. Stn, WC9-5453-5, 27°41.32∞N, 91°17.51∞W, 761 m. One W, one manca, Stn WC10-5458-4, 27°45.17∞N, 90°47.38∞W, 545 m. Three W, Stn C7-1, 27°43.6967∞N, 89°58.7782∞W, 1080 m. Two W, Stn RW1-2. 27°29.9333∞N, 96°00.2164∞W, 213 m. One W, Stn S38-1, 28°16.4749∞N, 87°19.9043∞W, 2635 m. One W, Stn WC12-1, 27°19.58∞N, 91°32.46∞W, 1251 m. One non-ovigerous X, Stn WC4- 5419-1, 27°43.28∞N, 92°08.08∞W, 545 m. One non-ovigerous X, Stn WC5-5428-4, 27°47.05∞N, 91°46.10∞W, 298 m. One non-ovigerous X, Stn WC5-5426-2, 27°47.02∞N, 91°46.05∞Wm 302 m. One non-ovigerous X, Stn E2A-4445-1, 28°35.22∞N, 86°46.26∞W, 622 m. Three non-ovigerous X, Stn E2A-4444-6, 28°35.26∞N, 86°44.27∞W, 624 m. One non-ovigerous X, Stn E2-4454-4, 28°16.46∞N, 86°14.46∞W, 622 m. Two non-ovigerous X, Stn E2B-4450-1, 28°18.02∞N, 86°18.39∞W, 625 m. Three non-ovigerous X, Stn E2A-4443-5, 28°35.26∞N, 86°44.27∞W, 624 m. Four non-ovigerous X, Stn E1C-4424-6. 28°12.04∞N, 85°31.30∞W, 351 m. One non-ovigerous X, Stn E2E-4473-5, 28°02.11∞N, 85°40.56∞W, 622 m. One non-ovigerous X, Stn E2-4451-1, 28°16.48∞N, 86°14.53∞W, 624 m. Two non-ovigerous X, Stn E2A-4442-4, 28°35.16∞N, 86°46.24∞W, 625 m. Three non-ovigerous X, Stn E2D-4468-6, 28°07.50∞N, 85°52.18∞W, 627 m. Two nonovigerous X, Stn WC5-5425-1, 27°47.13∞N, 91°46.12∞W, 291 m. One non-ovigerous X, Stn WC3-5413-1, 27°35.34∞N, 92°21.42∞W, 750 m. One non-ovigerous X, Stn WC7- 5439-3, 27°45.49∞N, 91°13.08∞W, 444 m. One non-ovigerous X, Stn WC7-5440-4, 27°45.49∞N, 91°13.08∞W, 444 m. One non-ovigerous X, Stn WC7-5438-2, 27°44.37∞N, 91°13.07∞W, 455 m. One non-ovigerous X, Stn E3C-4432-2, 28°15.46∞N, 86°36.51∞W, 849 m. One non-ovigerous X, Stn WC5-5430-6, 27°47.06∞N, 91°46.09∞W, 298 m. One non-ovigerous X, Stn WC3-5415-3, 27°35.56∞N, 92°21.33∞W, 750 m. One nonovigerous X, Stn WC10-5459-5, 27°45.19∞N, 90°47.41∞W, 748 m. One non-ovigerous X, Stn E3C-4434-4, 28°15.48∞N, 86°36.58∞W, 847 m. Two non-ovigerous X, Stn WC8-5447-5, 27°50.29∞N, 90°44.06∞W, 547 m. One non-ovigerous X, Stn E3-4481-1, 28°09.22∞N, 86°24.41∞W, 819 m. One non-ovigerous X, Stn WC9-5452-4, 27°41.17∞N, 91°17.46∞W, 770 m. Two non-ovigerous X, Stn WC6-5432-2, 27°42.43∞N, 91°33.02∞W, 580 m. One non-ovigerous X, Stn WC8-5443-1, 27°50.30∞N, 90°44.07∞W, 545 m. Two non-ovigerous X, Stn WC8-5446-4, 27°50.23∞N, 90°44.01∞W, 550 m. Five nonovigerous X, Stn MT 2-1, 28°27.0646∞N, 89°40.3563∞W, 676 m. Three non-ovigerous X, Stn C7-1, 27°43.6967∞N, 89°58.7782∞W, 1080 m. One non-ovigerous X, Stn C7-2, 1070 m. One non-ovigerous X, Stn C12-2. 26°22.9752∞N, 89°14.4854∞W, 2920 m. Two non-ovigerous X, Stn MT 3-1, 28°13.2246∞N. Three non-ovigerous X, Stn MT 4-1, 27°49.6198∞N, 89°09.9526∞W, 1401 m. Two non-ovigerous X, Stn NB4-2, 2050 m. One non-ovigerous X, Stn RW4-2, 1580 m. One non-ovigerous X, Stn S 35-2, 667 m. One non-ovigerous X, Stn S42-2, 28°15.1557∞N, 86°25.0663∞W, 767 m. Two nonovigerous X, Stn MT 6-2, 27°00.0892∞N, 87°59.2938∞W, 2750 m. One non-ovigerous X, Stn NB4-1, 26°15.2711∞N, 92°23.6978∞W, 2030 m. Two non-ovigerous X, Stn RW2-1, 27°15.2435∞N, 95°44.6186∞W, 950 m. One non-ovigerous X, Stn RW4-1, 26°44.8861∞N, 95°14.7680∞W, 1570 m. Four non-ovigerous X, Stn S35-1, 29°20.0500∞N, 87°03.3758∞W, 658 m. One non-ovigerous X, Stn S38-1, 28°16.4749∞N, 87°19.9043∞W, 2635 m. Two non-ovigerous X, Stn S42-1, 28°15.1557∞N, 86°25.0663∞W, 767 m. Two non-ovigerous X, Stn W4-1, 26°43.9027∞N, 93°19.1708∞W, 1420 m. One non-ovigerous X, Stn WC12-1, 27°19.3945∞N, 91°33.3486∞W, 1168 m. One non-ovigerous X, Stn AC 1-2, 2450 m.

Diagnosis, female. Antennule article 2 half the length of article 1. Cheliped fixed finger without pronounced serration. Cheliped dactylus without depression and processes. Maxilliped endites with process. Pleopods absent. Uropods shorter than pleotelson. Pleotelson acorn-shaped and long (longer than combined length of all pleonites).

Diagnosis, male. Antennule article 2 longer than half as long as article 1. Cheliped fixed finger with pronounced proximal serration. Cheliped dactylus with small proximal depression and two processes. Pleopods present on all five pleonites, armed with simple setae. Uropods shorter than pleotelson. Pleotelson acorn-shaped and long (as long as combined length of four pleonites).

Etymology. Named in honour of our friend and colleague Mr Jerry McLelland.