Pachycheles rudis Stimpson 1859

• Main Author: Wicksten, Mary K.
• Format: Text
• Language: unknown
• Published: Zenodo 2012
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Malacostraca; Decapoda; Porcellanidae; Pachycheles; Pachycheles rudis; Baja; Pacific; Calvin; Pillar; Abbott; Dover; Kodiak; Alaska
• Online Access: https://dx.doi.org/10.5281/zenodo.5255124; https://zenodo.org/record/5255124

Pachycheles rudis Stimpson, 1859 (Fig. 36D, Pl. 7E) Pachycheles rudis Stimpson, 1859: 76, pl. 1, fig. 5. — Holmes 1900: 109. — Rathbun 1904: 168, fig. 6. — Schmitt 1921: 176, pl. 32, fig. 2; fig. 11. — Johnson & Snook 1927: 350, fig. 298. — Haig 1960: 170, pl. 34, fig. 1. — Haig et al . 1970: 26. — Gonor & Gonor 1973: 25. — Haig & Abbott 1980: 589, fig. 24.20. — Hart 1982: 100, fig. 101. — Ricketts et al . 1985: 402, fig. 308. — Jensen 1986: 180; 1995: 74, fig. 147. — Kuris et al . 2007: 648, pl. 326 B1. Diagnosis. Front narrow, trilobate in frontal view, with dense short setae. Carapace about as broad as long, strongly convex from front to back, mostly punctate or with flattened granules. Chelipeds unequal. Merus rugose, granular, anterior margin with strongly projecting lobe. Carpus with broad subtriangular lobe on anterior margin, dorsal surface covered with long setae, large coarse granules. Chelipeds with large coarse granules; large protuberance at base of dactyl, surface covered with setae which do not extend beyond most proximal part of dactyl. Pereopods 2–4 with thick fringe of plumose setae along anterior margins. Telson with 5 plates. Carapace length to 17.4 mm. Color in life. Carapace mottled, with gray, brown, white stripes; in smaller animals, may be almost completely white except for one or two brown patches. Chelipeds greenish brown with gray and bluish granules. Pereopods 2–4 mottled with brown, gray, or white The color notes are based on crabs from Pillar Point, San Mateo County, California. Habitat and depth. Under stones, in holdfasts or in well-protected crevices, usually intertidal, to 29 m. Range. Kodiak, Alaska to Magdalena Bay, Baja California, Mexico. Type locality Monterey, California. Remarks. This crab may live in pairs, sometimes in association with the shrimp Betaeus setosus (Jensen 1986). : 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 156 : {"references": ["Stimpson, W. (1859 - 1860) Notes on North American Crustacea, in the museum of the Smithsonian Institution. Annals of the Lyceum of Natural History, New York, 7, [pp. 49 - 93 published in 1859; pp. 176 - 246 published in 1860].", "Holmes, S. J. (1900) Synopsis of California stalk-eyed Crustacea. Occasional Papers of the California Academy of Sciences, 7, 12 - 62.", "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.", "Haig, J. (1960) The Porcellanidae (Crustacea Anomura) of the eastern Pacific. Allan Hancock Pacific Expeditions, 24, 1 - 440.", "Haig, J., Hopkins, T. S, & Scanland, T. B. (1970) The shallow water anomuran crab fauna of southwestern Baja California, Mexico. Transactions of the San Diego Society of Natural History, 16, 13 - 32.", "Gonor, S. L & Gonor, J. J. (1973) Feeding, cleaning, and swimming behavior in larval stages of porcellanid crabs (Crustacea: Anomura). United States Fishery Bulletin, 71, 225 - 234.", "Haig, J. & Abbott, D. (1980) Macrura and Anomura: the ghost shrimps, hermit crabs, and allies. In: Morris, R., Abbott, D. & E. Haderlie, E. (Eds.) Intertidal Invertebrates of California. Stanford University Press, Stanford, California, pp. 577 - 593.", "Hart, J. F. L. (1982) Crabs and their Relatives of British Columbia. British Columbia Provincial Museum Handbook 40, Victoria, 267 pp.", "Ricketts, E. F., Calvin, J., Hedgpeth, J. W. & Phillips, D. W. (1985) Between Pacific Tides. Stanford University Press, Stanford, California, 5 th ed., 652 pp.", "Jensen, G. C. (1986) Some observations of the alpheid shrimp Betaeus setosus Hart with its host, Pachycheles rudis Stimpson. Bulletin of the Southern California Academy of Sciences, 85, 180 - 181.", "Jensen, G. C. (1995) Pacific Coast Crabs and Shrimps. Sea Challengers, Monterey, California, 87 pp.", "Kuris, A. M., Sadeghian, P. & Carlton, J. T. (2007) Keys to Decapod Crustacea. In: Carlton, J. T. (Ed.) The Light and Smith Manual: Intertidal Invertebrates Central California to Oregon. University of California Press, Berkeley, 4 th ed., pp. 636 - 656."]}