Alamprops tomalesi Gerken 2018, n. comb.

Alamprops tomalesi (Gladfelter, 1975) n. comb.

Lamprops tomalesi Gladfelter, 1975: 244–246, fig. 2.

Type material. Holotype: USNM 143686, ovigerous female. Dillon Beach.

Diagnosis. Carapace without lateral ridges; eyelobe without lenses, not extending to anterior border of pseudorostrum. Telson without lateral setae, 5 terminal setae, central seta longest, outer pair shortest. Uropod peduncle with 9 medial setae; uropod exopod article 1 2.0 length of article 2. Male unknown.

Depth. 8 m.

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

Remarks. The most similar species is A. comatus; however, in A. comatus the lateral margins of the telson are serrate, while in A. triserratus the lateral margins of the telson are entire. In addition, A. triserratus is known from shallow waters off California, while A. comatus is known from 3423 m in the Antarctic. The most similar Lamprops is L. pumilio, in which the telson is 0.9 time the length of uropod peduncles, and uropod exopod article 1 is 1.1 times the length of article 2. In contrast, in A. tomalesi the telson is 0.7 times the length of the uropod peduncles, and uropod exopod article 1 is twice the length of article 2.