Heptacarpus flexus

• Main Author: Wicksten, Mary K.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Decapoda; Hippolytidae; Heptacarpus; Heptacarpus flexus; Bering Sea; Hippolyte; Okhotsk; Yakovlev; Kamchatka; Alaska
• Online Access: https://zenodo.org/record/5254952; https://doi.org/10.5281/zenodo.5254952

Heptacarpus flexus (Rathbun, 1899) (Fig. 20E) Spirontocaris camtschatica Rathbun, 1899: 557 [not Hippolyte camtschatica Stimpson, 1860]. Spirontocaris flexa Rathbun, 1904: 78, fig. 32.— Schmitt 1921: 58, fig. 36. Heptacarpus flexus. — Holthuis 1947: 12. — Kozloff 1974: 167. — Word & Charwat 1976 b: 115.— Butler 1980: 206. — Wicksten 1989b: 312; 1990b: 594. — Chace 1997: 44. — Komai & Yakovlev 2000: 304. Diagnosis. Very similar to H. tenuissimus except rostrum with 4 or 5 dorsal, 5–8 ventral teeth, anterior-most dorsal tooth near to or behind middle of rostrum. Stylocerite exceeding first segment of antennular peduncle. Third maxilliped, pereopods 1, 2 with epipods. Pereopods 3–5 slender, dactyls slender, weakly bifid. Merus of pereopod 3, with 2 spines; pereopod 4, with 2 spines; pereopod 5, with 1 spine. Pleura of abdominal somites 1–4 rounded, 5 with ventral point. Somite 3 with dorsal hump. Telson with 4 pairs dorsolateral spines. Female total length to 54 mm, male not reported. Color in life. Not reported. Habitat and depth. Benthic, 37–172 m. Range. Sea of Japan, Sea of Okhotsk, Kuril Is. and Kamchatka; Bering Sea to Farallon Is., California. Type locality north of Bird I., Shumagins, Alaska. Word & Charwat (1976) included this species in their guide to the shrimps of southern California, but there are no records of this species south of the Farallon Is. Published as part of Wicksten, Mary K., 2012, Decapod Crustacea of the Californian and Oregonian Zoogeographic Provinces 3371, pp. 1-307 in Zootaxa 3371 on pages 81-82