Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Issue: Vol. 5419 No. 1: 5 Mar. 2024
Type: Article
Published: 2024-03-05
DOI: 10.11646/zootaxa.5419.1.5
Page range: 121-129
Abstract views: 11
PDF downloaded: 3

A new species of the genus Trichopagurus de Saint Laurent, 1968 (Crustacea: Decapoda: Anomura: Paguridae) from a semi-submerged marine cave in Okinawa Island, southwestern Japan

Graduate School of Engineering and Science; University of the Ryukyus; 1 Senbaru; Nishihara; Okinawa 903–0213; Japan
Okinawa Prefectual University of Arts; 1-4 Shuri-Tounokura; Naha; Okinawa 903-8602; Japan
Estuary Research Center; Shimane University; 1060 Nishikawatsu-cho; Matsue; Shimane; 690-8504 Japan
Crustacea Paguroidea dark environment cryptic fauna western Pacific

Abstract

A new hermit crab species of Paguridae, Trichopagurus spinibrachium n. sp., is described on the basis of a single male specimen collected from the anchialine environment of a semi-submerged marine cave in Okinawa Island, Ryukyu Islands, southwestern Japan. It is morphologically similar to T. macrochela Komai & Osawa, 2005 and T. tenuidactylus Komai, 2013, but differs in the shape and armature of the ocular, antennular and antennal peduncles, chelipeds, and ambulatory legs. The new species may be distinguished from all known congeners by the stronger armature of the carpi and meri of both chelipeds. Trichopagurus spinibrachium n. sp. is the third species of the genus recorded from submarine caves, although it may also occur on nearby coral reefs as does T. macrochela and T. trichophthalmus (Forest, 1954).

 

References

  1. Arima, H. (2014) Hermit Crabs Illustrated. Seibundo-Shinkosha Co. Ltd, Tokyo, 223 pp. [in Japanese]
  2. Forest, J. (1954) Crustacés Décapodes Marcheurs des Iles de Tahiti et des Tuamotu. I. Paguridea (suite). Bulletin du Muséum national d’Histoire naturelle, Paris, Series 2, 26, 71–79.
  3. Fujita, Y. (2019) The fauna of decapod crustaceans in submarine caves of the Ryukyu Islands, with special reference to environmental factors in the caves. Taxa (Proceedings of the Japanese Society of Systematic Zoology), 46, 3–12. [in Japanese with English abstract]
  4. Fujita, Y. & Naruse, T. (2024) A new genus and species of a submarine cave crab of the family Plagusiidae Dana, 1851 (Crustacea: Brachyura: Grapsoidea) from Okinawa Island, Ryukyu Islands, southwestern Japan. Zootaxa, 5410 (3), 408–418. https://doi.org/10.11646/zootaxa.5410.3.8
  5. Komai, T. (2013) Additional records of the pagurid hermit crab genus Trichopagurus de Saint Laurent, 1968 (Crustacea: Decapoda: Anomura), with description of a new species from the Philippines. Zootaxa, 3670 (2), 274–282. https://doi.org/10.11646/zootaxa.3670.2.10
  6. Komai, T. & Osawa, M. (2005) A new species of Trichopagurus de Saint Laurent (Crustacea: Decapoda: Anomura: Paguridae) from the Ryukyu Islands, and redescription of T. trichophthalmus (Forest). Zootaxa, 801 (1), 1–20. https://doi.org/10.11646/zootaxa.801.1.1
  7. Komai, T. & Poupin, J. (2012) Two new species of shallow-water hermit crabs (Crustacea: Decapoda: Paguridae) from Mayotte Island, southwestern Indian Ocean. Zootaxa, 3277 (1), 56–68. https://doi.org/10.11646/zootaxa.3277.1.4
  8. Latreille, P.A. (1802) Histoire Naturelle, Générale et Particulière des Crustacés et des Insectes. Vol. 3. F. Dufart, Paris, 467 pp. https://doi.org/10.5962/bhl.title.15764
  9. McLaughlin, P.A. (2003) Illustrated keys to families and genera of the superfamily Paguroidea (Crustacea: Decapoda: Anomura), with diagnoses of genera of Paguridae. Memoirs of Museum Victoria, 60 (1), 111–144. https://doi.org/10.24199/j.mmv.2003.60.16
  10. McLaughlin, P.A., Rahayu, D.L., Komai, T. & Chan, T.-Y. (2007) A Catalog of the Hermit Crabs (Paguroidea) of Taiwan. National Taiwan Ocean University, Keelung, viii + 365 pp.
  11. Morgan, G.J. (1992). The hermit crabs (Crustacea: Decapoda: Coenobitidae, Diogenidae, Paguridae) of Christmas and Cocos (Keeling) Islands, Indian Ocean, with description of a new species of Paguristes. Raffles Bulletin of Zoology, 49 (2), 163–174.
  12. Osawa, M. & Fujita, Y. (2019) Submarine cave hermit crabs (Crustacea: Decapoda: Anomura: Paguroidea) from three islands of the Ryukyu Islands, southwestern Japan. Zootaxa, 4560 (3), 463–482. https://doi.org/10.11646/zootaxa.4560.3.3
  13. Osawa, M. & Fujita, Y. (2022) A new species of the genus Eutrichopagurus Komai, 2015 (Crustacea: Decapoda: Anomura: Paguridae) from a submarine cave in the Ryukyu Islands, southwestern Japan. Zootaxa, 5214 (3), 440–450. https://doi.org/10.11646/zootaxa.5214.3.6
  14. Osawa, M., Fujita, Y. & Okuno, J. (2006) Two new species of Pagurixus (Crustacea: Decapoda: Anomura: Paguridae) from submarine caves of the Ryukyu Islands, southwestern Japan. Zootaxa, 1148 (1), 27–45. https://doi.org/10.11646/zootaxa.1148.1.2
  15. Saint Laurent, M. de. (1968) Révision des genres Catapaguroides et Cestopagurus et description de quatre genres nouveaux. II. Cestopagurus Bouvier (Crustacés Décapodes Paguridae). Bulletin du Muséum national d’Histoire naturelle, Paris, 2e Série, 42, 210–222.