Stenothoe haleloke J. L. Barnard 1970

Stenothoe haleloke

DIAGNOSIS OF FEMALE.—Lateral cephalic lobe broadly truncate, eyes medium in size, red in formaldehyde, clear in alcohol; antennae 1–2 extending equally, peduncles short; article 6 of gnathopod 1 strongly dominating articles 4 and 5 in size, latter with narrow posterior lobe, palm and posterior margin of article 6 equal to each other in length, article 2 thick; article 2 of gnathopod 2 with medial and lateral sharp distal lobes, lobe of article 3 sharp, articles 4–6 of regular form, palm oblique, simple, and equal to posterior margin of article 6, defined by 2 pairs of large spines; locking spines of pereopods 1–5 simple; posterodistal corner of article 2 on pereopod 3 angular, pereopods otherwise of medium stoutness, fourth articles poorly expanded and weakly extended posterodistally; pleonal epimera 1–3 of regular form; urosomite 2 strongly telescoped into urosomite 1; uropod 1 with 2 spines on each ramus, uropod 2 with 1 spine on each ramus; peduncle of uropod 3 shorter than article 1 of ramus, bearing 2 sets of spine(s), article 1 of ramus with 2 sets of spine(s), article 2 of ramus simple, equal in length to article 1; telson with 2 spines on each side.

HOLOTYPE.—Bishop Museum collections, catalog number 7302, female, 2.0 mm. Unique.

TYPE-LOCALITY.—Fee 1, Waikiki Beach, Oahu, intertidal, Ulva lactuca, 25 April 1967.

RELATIONSHIP.—The female of this species has its closest known affinities with, but differs from S. monoculoides (Bate) (Sars, 1895, pl. 82, fig. 1), in the truncate cephalic lobe, and the presence of a few spines on the inner ramus of uropod 1, both rami of uropod 2 and on article 1 of the ramus on uropod 3 (the middle segment), and on the telson.

The sympatriot S. gallensis Walker (J. L. Barnard, 1955a) differs in its female from S. haleloke in the longer peduncle of uropod 3, the weak gnathopod 1 with thin article 2, and the relatively large size of article 4 compared with article 6 and in the smallness of the lobe on article 5. Male S. gallensis has a distinctive gnathopod 2 and uropod 3, but male S. haleloke is unknown.

DISTRIBUTION.—Hawaiian Islands.