Published July 4, 2012 | Version v1
Taxonomic treatment Open

Pagurus dalli

Description

Pagurus dalli (Benedict, 1892)

(Fig. 43H–K)

Eupagurus (Trigonochirus) dalli Benendict, 1892: 9.

Pagurus (Trigonocheirus) Dalli. — Holmes 1900: 139.

Pagurus dalli. — Rathbun 1904: 158, pl. 4, fig. 1. — McLaughlin 1974; 280, figs. 72, 73 (extensive synonymy). — Hart 1982: 160, fig. 62. — Ricketts et al. 1985: 300.

Diagnosis (after McLaughlin 1974). Rostrum usually slightly longer than lateral projections of carapace, triangular, ending in small acute spine, usually with terminal tuft of short setae. Eyestalk moderately short, stout; reaching middle of third segment of antennular peduncle. Ocular scale subovate. Major cheliped elongate, ventromesial margin of merus without strong spinose protuberance; dorsal, lateral surfaces set with sharp teeth. Minor cheliped much smaller than major cheliped, with dorsal surface convex, midline elevated, bearing single row of strong spines. Pereopods 2, 3 nearly equal in size, their segments flat, dactyl equal in size to or slightly exceedinglength of propodus. Telson asymmetrical, lateral margins rounded, terminal margins strongly spinose. Carapace length to 11.9 mm.

Color in life. Overall brown with opaque white bands on distal part of the meri of pereopods 1–3. Hart (1982) gave a detailed description of the color pattern.

Habitat and depth. Gravel, sand or mud, intertidal zone to 276 m (Hart 1982).

Range. Bering Sea to Oregon. Type locality Bristol Bay, Alaska (Albatross sta. 3233).

Remarks. Ricketts et al. (1985) noted that this hermit crab often lives within holes in the sponge Suberites ficus (Johnston, 1842).

Notes

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 186-187

Files

Files (2.1 kB)

Name Size Download all
md5:9d98254b3422becb775e3b7f69c37b95
2.1 kB Download

System files (12.5 kB)

Name Size Download all
md5:586c47c1cf5059eb77281a8f4c4089d5
12.5 kB Download

Linked records

Additional details

Biodiversity

Family
Paguridae
Genus
Pagurus
Kingdom
Animalia
Order
Decapoda
Phylum
Arthropoda
Scientific name authorship
Benedict
Species
dalli
Taxon rank
species
Taxonomic concept label
Pagurus dalli (Benedict, 1892) sec. Wicksten, 2012

References

  • 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.
  • McLaughlin, P. A. (1974) The hermit crabs (Crustacea Decapoda, Paguridea) of northwestern North America. Zoologische Verhandelingen Uitgegeven door het Rijksmuseum van Natuurlijke Historie te Leiden, 130, 1 - 396.
  • 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.