Paracrangon echinata Dana 1852

• Main Author: Wicksten, Mary K.
• Format: Text
• Language: unknown
• Published: Zenodo 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Decapoda; Hippolytidae; Paracrangon; Paracrangon echinata; San Juan; Okhotsk; Galapagos; Canada; Pacific; Dover; Archipelago; okhotsk sea; Alaska
• Online Access: https://dx.doi.org/10.5281/zenodo.5255033; https://zenodo.org/record/5255033

Paracrangon echinata Dana, 1852 (Fig. 29L) Paracrangon echinatus Dana, 1852: 20; 1852b: 538, pl. 33, fig. 6. — Holmes 1900: 176, pl. 2, figs. 36, 37. Paracrangon echinata . — Faxon 1895: 131. — Rathbun 1904: 103. — Schmitt 1921: 103, fig. 72. — Johnson & Snook 1927: 314. — Kobyakova 1937: 139. — Kozloff 1974: 164. — Butler 1980: 75, pl. 2D; 1995: 39, fig. 54; 2011: 246, fig. 2. — Jensen 2011: 246, fig. 2. Diagnosis. Rostrum long, equal to carapace length in male, 0.6–0.8 times as long as carapace length in female, with one moderate dorsal tooth near middle; anterior margin with 1 tooth near apex, long curved tooth at base. Carapace with 4 median dorsal teeth on median carina, anterior teeth smaller than posterior; strong antennal tooth, massive, flared branchiostegal tooth, strong pterygostomian tooth; dorsolateral surfaces carinated forming irregular quadrangular teeth at angles of carinae; deep sulcus from base of posterior median tooth across cardiac region. Eyes of moderate size. Peduncle of antennule long, overreaching carpocerite, stylocerite short, apex rounded. Scaphocerite of second antenna not exceeding second segment of peduncle of antennule, blade exceeding lateral tooth. Third maxilliped long, slender, distal tooth on proximal segment, exopod present. Pereopod 1 about as long as third maxilliped, dactyl of subchela closing obliquely, merus with distal tooth. Pereopod 2 absent. Pereopods 3–5 similar, longer than pereopod 1, slender, dactyls with acute apices. Abdominal somites carinate posterior to somite 2, carina of somite 3 especially high, dorsolateral surfaces of pleura 1–5 each with 2 vertical sulci, pleura 1–5 having strong lateral teeth. Pleura of somite 6 with 2 median dorsal carinae, midlateral tooth, lower lateral, posteroventral, posterodorsal teeth. Pleura of male with lateral sternal teeth; in female, teeth absent. Telson with 2 median dorsal spines, 3 pairs dorsolateral spines. Male total length 44 m, female 65 mm. Color in life. Light brownish gray, generally overlaid with small brown or black spots (Butler 1980: pl. 2D), mottled brown and translucent or yellowish (K. Lee, pers. comm.). Habitat and depth. Mixed or rocky bottoms, 7–201 m. Range. Port Etches, Alaska to La Jolla, California; Sea of Okhotsk, Sea of Japan to Korea Strait, Sagami Bay. Type locality Puget Sound. Remarks. Live animals often assume the cataleptic position: resting with the pereopods against the bottom and the abdomen flexed upward at a nearly 45˚ angle. These well-camouflaged shrimp are ambush predators, catching gammarid amphipods, smaller carideans and other small prey. Jensen (2011: fig. 2) photographed their predatory activities. : 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 page 120 : {"references": ["Holmes, S. J. (1900) Synopsis of California stalk-eyed Crustacea. Occasional Papers of the California Academy of Sciences, 7, 12 - 62.", "Faxon, W. (1895) Reports on an exploration off the west coasts of Mexico, central and South America, and off the Galapagos Islands, in charge of Alexander Agassiz, by the U. S. Fish Commission steamer \" Albatross \" during 1891, Lieut. Commander Z. L. Tanner, U. S. N., commanding. 15. The stalk-eyed Crustacea. Museum of Comparative Zoology at Harvard College Memoir, 18, 1 - 292.", "Rathbun, M. J. (1904) Decapod crustaceans of the northwest coast of North America. Harriman Alaska Expedition, 10, 1 - 219.", "Schmitt, W. L. (1921) The marine decapod Crustacea of California. University of California Publications in Zoology, 23, 1 - 470.", "Johnson, M. E. & Snook, H. J. (1927) Seashore Animals of the Pacific Coast. Dover Publications, New York, reprint 1967, 659 pp.", "Kobyakova, Z. I. (1937) Desjatinogie raki (Decapoda) Okhotskogo i Yaponskogo Morei. Uchenye Zapiski, 15, 93 - 154.", "Kozloff, E. N. (1974) Keys to the Marine Invertebrates of Puget Sound, the San Juan Archipelago, and Adjacent Regions. University of Washington Press, Seattle, 226 pp.", "Butler, T. H. (1980) Shrimps of the Pacific Coast of Canada. Canadian Bulletin of Fisheries and Aquatic Science, 202, 1 - 280.", "Jensen, G. C. (2011). Feeding behavior of the horned shrimp, Paracrangon echinata (Caridea: Crangonidae). Journal of Crustacean Biology, 31, 246 - 248."]}