Aplodelphys conica gen. et sp. nov.

(Fig. 444)

Typematerial. Holotype (intact ♀, MNHN-IU-2014- 21469), paratypes (2 intact ♀♀, MNHN-IU-2014-21470), and dissected paratype (♀) from Didemnum rodriguesi Rocha & Monniot F, 1993 (MNHN-IT-2008-3295 = MNHNA2/DID.C/199), Citrons Bay, New Caledonia, depth 3-40 m, Thomassin coll., 27 March 1987.

Additionalmaterial. 2 ♀♀ (MNHN-IU-2018-1916) from the same species of host and same locality as the typematerial.

Etymology. The species name refers to the conical cephalosome of the new species.

Description of female. Body (Fig. 444A, B) cylindrical, consisting of unsegmented prosome and small urosome. Body length 2.29 mm in holotype, 1.91 and 2.67 mm in 2 paratypes; greatest width 0.51 mm across region of leg 1. Body surface ornamented with fine spinules. Cephalosome conical anteriorly. Posterior third of body slightly constricted, with width of 0.44 mm; posteriormargin of prosome rounded. Urosome (Fig. 444C, D) small, located at posterior end of prosome, unsegmented, about twice as wide as long. Caudal rami (Fig. 444C) tubercle-like, spinulose, positioned on dorsal surface of urosome; lacking caudal setae. Copulatory pore positioned close to apex of urosome (Fig. 444D).

Rostrum and antennules absent. Antenna (Fig. 444E) small, 2-segmented, positioned at 18% of total body length; first segment (coxobasis) wider than long, unarmed; secondsegment (endopod) slightlylonger than wide; armed with 2 small setae distally plus stout terminal claw, half as long as endopod, with pointed tip.

Labrum (Fig. 444A, B) large, conical, directed posteriorly, extendingslightlybeyond tipof leg 1; insertion of labrum at 26% of body length. No mouthparts present. Legs 1 and 2 (Fig. 444A, B) biramous with unsegmented, conical, posteriorly-directed rami. Both rami equal in length; rami of leg 2 slightly smaller than those of leg 1. Legs 1 and 2 positioned at 29 and 40% of body length, respectively. Legs 3-5 absent.

Male. Unknown.