Alamprops affinis (Lomakina, 1958), 2018

Gerken, Sarah, 2018, The Lampropidae (Crustacea: Cumacea) of the World, Zootaxa 4428 (1), pp. 1-192 : 13

Alamprops affinis (Lomakina, 1958) n. comb.

Lamprops affinis Lomakina, 1958a: 91–93 , fig. 39.

Lamprops fuscata .— Calman, 1912: 629 (in part).

Lamprops aff. fuscata .— Lomakina, 1958b: 208.

Type material. Deposition unknown. Not seen .

Diagnosis. Carapace without lateral ridges; eyelobe not extending to anterior border of pseudorostrum. Telson with 4 pairs of lateral setae, 5 terminal setae, outermost pair longest. Uropod peduncle with 4 medial setae; uropod exopod article 1 0.8 length of article 2. Male unknown.

Depth. 8–95 m.

Distribution. Boreal Pacific, Japan to Alaska.

Remarks. Alamprops affiinis can be differentiated from the similar species A. profundus and A. serratus by having equal terminal setae on the telson; both A. profundus and A. serratus have terminal setae of unequal lengths, with the outermost pair longest. In Lamprops , the most similar species is L. pumilio . In L. pumilio , the pseudorostrum extends in front of the eyelobe more than the length of the eyelobe, and the five telson terminal setae increase in length from the outer pair to the central seta, while in A. affinis the pseudorostrum is very short, barely meeting in front of the eyelobe, and the telson terminal setae are all equal in length.