Alamprops pseudosarsi ( Tsareva & Vassilenko, 1993 ) Gerken, 2018

Gerken, Sarah, 2018, The Lampropidae (Crustacea: Cumacea) of the World, Zootaxa 4428 (1), pp. 1-192 : 18

Alamprops pseudosarsi ( Tsareva & Vassilenko, 1993) n. comb.

Lamprops pseudosarsi Tsareva & Vassilenko, 1993: 13–17 , figs 1–2.

Type material. Holotype: ZIN N 1 /87001, ovigerous female . Paratypes: ZIN N 1 /87002, 3 females. Sea of Japan, Peter the Great Bay. Not seen .

Diagnosis. Carapace with 3 lateral ridges; eyelobe with lenses, not extending to anterior border of pseudorostrum. Telson without lateral setae, 5 terminal setae, central seta longest, outer pair longer than inner pair. Uropod peduncle without medial setae; uropod exopod article 1 1.1 length of article 2. Male unknown

Depth. 10 m.

Distribution. Peter the Great Bay, Sea of Japan, 42°38’N, 131°12’E.

Remarks. The generic placement of Alamprops pseudosarsi may be incorrect. The uropod exopod article 1 is 1.5 times the length of article 2, which suggests placement in Hemilamprops , not Alamprops and Lamprops , in which the uropod exopod article 1 is otherwise 0.2 or less the length of article 2. However, the pereopod 1 basis is distinctly longer than the other articles together, which agrees with other species of Alamprops and Lamprops , rather than Hemilamprops in which the basis of pereopod 1 is shorter than the rest of the articles combined. The description of the male is necessary to be certain of the correct generic placement. In the absence of the male, the species is retained in the group ( Alamprops / Lamprops ) it was placed in by Tsareva & Vassilenko (1993).

Within the genus Alamprops , A. pseudosarsi is unique in having 3 lateral ridges on the carapace. The only similar species with 3 lateral ridges is Lamprops fasciatus , which has a pair of long lateral setae on the telson, and in which the pseudorostrum meets just in front of the eyelobe, unlike A. pseudosarsi in which the pseudorostrum extends well past the eyelobe.