Alamprops obfuscatus ( Gladfelter, 1975 ) Gerken, 2018

Gerken, Sarah, 2018, The Lampropidae (Crustacea: Cumacea) of the World, Zootaxa 4428 (1), pp. 1-192 : 17

Alamprops obfuscatus ( Gladfelter, 1975) n. comb.

Diastylis obfuscata Gladfelter, 1975: 249 , fig. 5

Lamprops obfuscatus .— Băcescu, 1988: 19.

Type material. Holotype: USNM 143689 , ovigerous female, Dillon Beach.

Diagnosis. Carapace without lateral ridges; eyelobe not extending to anterior border of pseudorostrum. Telson without lateral setae, 5 terminal setae, central seta and outermost pair equal, inner pair short. Uropod peduncle with 4 medial setae; uropod exopod article 1 1.1 length of article 2. Male unknown.

Depth. 16 m.

Distribution. Dillon Beach, California, 38°N, 123°W.

Remarks. The most similar species to Alamprops obfuscatus are A. carinatus and A. flavus . In A. obfuscatus the outermost pair of setae on the telson are longer than the central seta, and the uropod peduncle has at least 8 medial setae. In contrast, in A. carinatus the central terminal seta on the telson is the longest, and in A. flavus the uropod peduncle has five or fewer medial setae. Within Lamprops , the most similar species is L. korroensis , which can be differentiated by the telson being half the length of the uropod peduncles, while in A. obfuscatus the telson is shorter than the uropod peduncles but much longer than half the length of the peduncles.