Alamprops flavus (Harada, 1959) n. comb.

Lamprops flava Harada, 1959: 234–237, fig. 3.—Gamô, 1963, 15; 1967, 264.

Type material. Deposition unknown. Shimoda Bay, Japan. Not seen .

Diagnosis. Carapace without lateral ridges; eyelobe not extending to anterior border of pseudorostrum. Telson without lateral setae, 5 terminal setae, outermost pair longest, inner pair shortest. Uropod peduncle with medial setae; uropod exopod article 1 1.4 length of article 2. Male antennal flagellum extending to midline of pleonite 5.

Depth. Not determined, estimated 0–10 m (modern depth, www.ports.com), collected by light trap .

Distribution. Shimoda Bay, Izu Peninsula, Japan, 34°40.2’N, 138°57’E (location, www.ports.com)

Remarks. Alamprops flavus is most similar to A. carinatus and A. obfuscatus, but can be differentiated by the terminal setae on the telson and the setae on the uropod peduncle. In A. carinatus, the central terminal seta is the longest, while in A. flavus the outermost pair of terminal setae on the telson are the longest. In A. obfuscatus the uropod peduncle has 8 or more medial setae, while in A. flavus there are only 5 or fewer setae medially on the uropod peduncle. In addition, A. flavus is only known from Japan.