Hemilamprops cristatus ( Sars, 1870 )

Gerken, Sarah, 2018, The Lampropidae (Crustacea: Cumacea) of the World, Zootaxa 4428 (1), pp. 1-192 : 67-68

Hemilamprops cristatus ( Sars, 1870)

Lamprops cristata, Sars 1870: 152 .

Hemilamprops cristata .— Sars, 1883: 11, 56.

? Hemilamprops cristata .— Calman, 1905: 41–42.

Type material. Deposition unknown. Lofoten, west coast of Norway. Not seen .

Diagnosis. Carapace without lateral ridges, without setae, dorsal crest serrate. Telson 0.8 length of uropod peduncles, with 3 pairs lateral setae, 3 terminal setae. Uropod exopod article 1 0.9 length of article 2. Adult male antenna extending to posterior border of pleonite 6; telson with 3 pairs lateral setae.

Depth. 130–4000 m.

Distribution. Boreal Atlantic.

Remarks. Hemilamprops cristatus is distinctive among North Atlantic congeners by its serrate crest on the carapace. The most similar species is H. pellucidus , which can be distinguished by the lateral setation on the telson. In H. cristatus there are four or fewer pairs of lateral setae, while in H. pellucidus there are five or more pairs of lateral setae.