Decapoda - Brachyura - Plagusiidae - Plagusia

Plagusia squamosa (Herbst, 1790)



World Distribution
(Hendrickx, 1995b: 140) - Red Sea to central America. In the eastern Pacific, from Gulf of California to Acapulco and Oceanic Islands: Baja California Sur, Alijos, Clipperton.
Poupin (BD Internet) - Indo-Pacifique de la Mer Rouge à l'Amérique centrale. Comprend, Mer Rouge, Afrique orientale, Somalie, Mozambique, Tanzanie, Kenya, Comores, Mayotte, Madagascar, Maurice, Réunion, Australie, Hawaii, Polynésie française, Clipperton.
Naderloo (2011: 40) - Indo-West Pacific: South Africa, Madagascar, Comoros, Mauritius, East Africa, Somalia, Red Sea, Gulf of Aden, Oman, Gulf of Oman, Pakistan, India, China, Japan, Australia, New Zealand, Hawaii, and recently from Mediterranean by Zaouali et al. (2007) and eastern Pacific by Castro (2011).

Environnement : Marine - Substrat/Association : Hard bottom (rock and rubbles)

Vertical range : Shallow-waters (0-100 m) - Min-Max observed: 0-10 m

Mayotte data
Plagusia squamosa (Herbst, 1790)
Material examined — Mayotte KUW 2009, st. 11, 1 M 34.0 x 35.0 mm, 1 F 37.0 x 38.0 mm (photo), MNHN B32052, MNHN-IU-2009-971.
Other records — Plagusia depressa tuberculata - Crosnier, 1965: 80, pl. VII, fig. 3, Mayotte (Bandéli). - Guinot, 1967: 288, list with Comoros / Plagusia depressa tuberculata Lamarck, 1818 accepted as P. squamosa in WoRMS (2018).
Remarks — Plagusia squamosa is affiliated to Plagusia immaculata Lamarck, 1818. Vannini & Valmori (1981: 92) illustrate both species, with carapace having hairy tubercles in P. squamosa instead of almost glabrous in P. immaculata.
Geographic and depth ranges — IP, Red Sea, South Africa to Hawaii, French Polynesia, Clipperton and eastern Pacific (Gulf of California to Acapulco), invasive in the Mediterranean Sea (cf. Zaouali et al., 2007); low intertidal, shallow subtidal, and on flotsam and ship’s hulls.

Réunion data
Plagusia squamosa - Mission Poupin, avril 2008 (MNHN, St. 12, 1 femelle 23,4x26,2 mm).

New Caledonia data
Nouvelle Caledonie, STATION — Edwards AM, Nouv Arch MNHN 8: 229-267

Central Pacific data (Wallis & Futuna, Polynesia, Clipperton, Easter Island)
CLIPPERTON - Plagusia depressa tuberculata - Garth, 1965: 32, figs 17, 18 (Clipperton). - Richard et al., 1968: 8 (Clipperton). - Hendrickx, 1995b: 140 (distribution in the eastern Pacific). - Plagusia squamosa - Davie, 2002: 441 (distribution, synonymy). - Poupin et al., 2007 (Clipperton new coll.). - FRENCH POLYNESIA - Plagusia squamosa - Nobili, 1907: 406 (Kamaka, Mangareva; inferred only: reference not retrieved in recent works, and material not found in Paris). - Plagusia depressa tuberculata - Forest & Guinot, 1962: 74 (Biogeography "Tahiti-Tuamotu"). - Plagusia depressa - ? Monteforte, 1984: 172, annex 1, tab. a (Makatea) not P. depressa (Fabricius, 1775) = P. tuberculata cf. Plagusia tuberculata - Guinot, 1985: 454 (List). - Poupin, 1994a: 66, fig. 62, pl. 7h (Nuku Hiva, Raevavae, Tuamotu; coll. Frv Marara); 1996a: 72, 76 (Checklist) - Synonyms - Plagusia squamosa (Herbst, 1882) (cf. Sakai, 1976: 676, then Alcock, 1900: 437) - Unpublished specimens, MNHN - September 1994, Coll. & Det. J. Poupin (Maupihaa=Mopelia). - Remark: Plagusia depressa (Fabricius, 1775) is a species of the tropical Atlantic (cf. Dawson, 1987: 42) and cannot be Monteforte's (1984) material which is more likely P. tuberculata (One specimen of this species is actually deposited in the EPHE, Moorea, collections, Coll. and det. Monteforte). - Unpublished specimens, coll. & det. G. Paulay, Rangiroa, January 10, 2001, Avatoru Motu, ca. 1.5 km E. of Post Office, at Pension Henri (FLMNH-UF 1412), Rimatara February 9, 1983 (FLMNH-UF 3458). - Plagusia squamosa - Schubart & Ng, 2000: not consulted (synonymy; Plagusia squamosa (Herbst, 1790) is an older name for Plagusia tuberculata Lamarck, 1818). - AAMP, Marquesas, 2012, Leg 3, St. MQ5-M, Nuku Hiva, intertidal, coll. Poupin, sample JP26, St. MQ27-B, Hatu Iti, intertidal, coll. Starmer et al., sample LC364. - Plagusia cf. squamosa - Salvat & Bacchet, 2011: 257, photo, field guide 'Au Vent des Iles Ed. Tahiti - French Polynesia, most often Society (Moorea, Tahiti).

References : PDF list, 214 pp (1.4 Mo)

This species in Worms Database