Micropagurus polynesiensis ( Nobili, 1906 )

Komai, Tomoyuki, Rahayu, Dwi Listyo & Fujita, Yoshihisa, 2021, Hermit crabs of the family Paguridae (Crustacea: Decapoda: Anomura) from Christmas and Cocos (Keeling) Islands, Indian Ocean Territory of Australia, with descriptions of three new species and reappraisal of the genus Kumepagurus Komai & Osawa, 2012, Raffles Bulletin of Zoology 69, pp. 378-402 : 391

publication ID	https://doi.org/10.26107/RBZ-2021-0059
publication LSID	lsid:zoobank.org:pub:8C4058FE-A01E-4EAC-B491-21B213685784
persistent identifier	https://treatment.plazi.org/id/42200B42-EF47-FFCF-FF27-B87F4A21DB46
treatment provided by	Felipe (2022-10-09 05:16:18, last updated by Plazi 2023-11-07 18:10:54)
scientific name	Micropagurus polynesiensis ( Nobili, 1906 )
status

Treatment

Micropagurus polynesiensis ( Nobili, 1906) View in CoL

( Fig. 8A View Fig )

Anapagurus polynesiensis Nobili, 1906: 260 View in CoL ; 1907: 372, pl. 1 fig. 10; Forest, 1956: 1056.

Micropagurus polynesiensis View in CoL – Haig & Ball, 1988: 184; Asakura, 2005: 21 View Cited Treatment , figs. 14–18, 19A–C, 20; Arima, 2014: 202, unnumbered figs.

Micropagurus vexatus Haig & Ball, 1988: 181 View in CoL , figs. 11, 12; Morgan, 1992: 165; Davie, 2002: 80.

Material examined. COCOS (KEELING) ISLANDS. ZRC 2021.0632 View Materials , 1 male (sl 1.7 mm; photo), CK11, Lion Cave Point , W of Direction Island, 12°05.335′S, 96°52.353′E GoogleMaps ,

30.9 m, 21 March 2011; QM W29562, 1 male (sl 1.4 mm), CK18, the Rip , SW of Direction Island, 12°05.675′E, 96°53.175′E , 5.7 m, 22 March 2011.

Distribution. Widely distributed in the Indo-West Pacific: Seychelles, Indonesia, the Philippines, Japan, Loyalty Islands, and New Caledonia; shallow subtidal to 55 m ( Asakura, 2005). Morgan (1992) recorded this species from Cocos (Keeling) Islands (as M. vexatus ) and Davie (2002) included Christmas Island in the distribution of the species (as M. vexatus ).

Remarks. In his revision of Micropagurus, Asakura (2005) clarified that M. polynesiensis was a junior subjective synonym of M. vexatus . Consequently, previous records of M. vexatus from the study area ( Morgan, 1992; Davie, 2002) are referred to M. polynesiensis .

As has been demonstrated by Asakura (2005), the living colouration of the species is substantially variable. The specimen shown in Fig. 8A View Fig (ZRC 2021.0632, male, sl 1.7 mm) shows generally whitish overall colour.

References

Arima H (2014) Hermit Crab Illustrated. Seibundo-shinko-sha, Tokyo, 223 pp. [In Japanese]

Asakura A (2005) A review of the genus Micropagurus (Crustacea Decapoda Anomura Paguridae). Zootaxa, 1090: 1 - 34.

Davie PJF (2002) Crustacea: Malacostraca Eucarida (Part 2). Decapoda -- Anomura, Brachyura. Volume 19.3 B. In: Wells A & Houston WWK (eds.) Zoological Catalogue of Australia. CSIRO Publishing, Melbourne, xiv + 641 pp.

Forest J (1956) La faune des iles Cocos-Keeling. Paguridae. Bulletin of the Raffles Museum, 27: 45 - 55.

Haig J & Ball EE (1988) Hermit crabs from northern Australian and eastern Indonesian waters (Crustacea Decapoda: Anomura: Paguroidea) collected during the 1975 Alpha Helix Expedition. Records of the Australian Museum, 40: 151 - 196.

Morgan GJ (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, 40: 163 - 174.

Nobili G (1906) Diagnoses preliminaires de crustaces decapodes nouveaux recueillis par M. le Dr. G. Seurat aux iles Touamotou. Bulletin du Museum national d'Histoire naturelle, 12: 256 - 270.

Nobili G (1907) Ricerche sui Crostacei della Polinesia. Decapodi, Stomatopodi, Anisopodi e Isopodi. Memori della Reale Accademia delle Scienze di Torino, Serie 2, 57: 351 - 430, pls. 1 - 3.

Figures

Fig. 8. Habitus in dorsal view, showing living colouration. A, Micropagurus polynesiensis (Nobili, 1905), ZRC 2021.0632, male (sl 1.7 mm); B, Pagurixus carinimanus Komai & Osawa, 2006, ZRC 2021.0635, male (sl 2.0 mm); C, Pagurixus haigae Komai & Osawa, 2007, ZRC 2021.0647, male (sl 1.4 mm); D, Pagurixus maorus (Nobili, 1906), ZRC 2021.0638, female (sl 3.9 mm). Photographs by LKCNHM.