Decapoda - Brachyura - Pseudoziidae - Pseudozius

Pseudozius caystrus (Adams & White, 1849)



World Distribution
Sakai (2004 - CD) - Indo-ouest Pacifique, Mer rouge et Afrique orientale, Comores, Mayotte,, Glorieuses, Juan de Nova, Madagascar, Seychelles, Maurice, Laccadives, Chagos à Taiwan, Japon, Hawaii, Polynésie française. Comprend, Réunion.

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

Vertical range : Intertidal - Min-Max observed: 0-6 m

Mayotte data
Pseudozius caystrus (Adams & White, 1849)
Material examined — Mayotte KUW 2009, Mission KUW novembre 2009, st. 4, observation in situ seulement ; st. 6, spécimen(s) ; st. 10, 1 mâle 7,2x11,4 mm, MNHN sans numéro, det. juillet 2011, 1 autre sp. est Epixanthus frontalis ; st. 6, Déversoir Badamiers, Petite Terre, intertidal, 1 femelle 10,2x16,9 mm, MNHN sans numéro, dét. septembre 2011 ; st. 15, 20 observation in situ seulement ; st. 26, 1 M 10.8 x 17.8 mm, MNHN sans numéro, MNHN-IU-2009-2597, dét. juillet 2011 (2 autres spp. sont des Epixanthus frontalis) ; st. 29, 1 spécimen 17,8x30,6 mm
Other records — Pseudozius caystrus - Guinot, 1958c: 276, Mayotte, 1 F 13.5 x 8 mm MNHN. - Guinot, 1964: 272, list, with Mayotte. - Crosnier, 1984: 313, pl. XLVIII B, fig. 242-243, Madagascar, Kenya, Juan de Nova, Glorieuses, fig. 242-243, pléopode mâle 12,7 x 20,0 mm, MNHN-B 8760. - Poupin et al., 2013c: 11, Glorieuses, Expedition Glorieuses December 2012, st. BIO 30, st. BIO 34. intertidal.
Remarks — This species is very common in the interdital. It has superficial resemblances with Epixanthus frontalis (H. Milne Edwards, 1834) and was confused with this species in several stations in field notes. Shape of the male pleopod is a good character to separate these two species, short without distal flagellum in Pseudozius caystrus versus long with a coiled distal flagellum in Epixanthus frontalis (see Serène, 1984: 306, fig. 222-223).
Geographic and depth ranges — Red Sea, South Africa to Hawaii, French Polynesia; intertidal.

Réunion data
Pseudozius caystrus - Mission Poupin, avril 2008 (MNHN, St. 2, St Leu et st. 10, Grande Anse).

Central Pacific data (Wallis & Futuna, Polynesia, Clipperton, Easter Island)
WALLIS & FUTUNA - Pseudozius caystrus - Poupin & Juncker, in preparation (Alofi). - FRENCH POLYNESIA - Pseudozius planus Dana, 1852a: 81; 1852b: 233; 1855, pl. 13, fig. 6a-h (Raraka, "Waterland" = Ahe and/or Manihi). - Evans, 1967: 409 ("Paumotu"; BM syntypes). - Pseudozius caystrus - Nobili, 1907: 397 (Kamaka). - Sendler, 1923: 38 (Makatea). - Holthuis, 1953: 26 (Raroia). - Morrison, 1954: 9 (Raroia). - Forest & Guinot, 1961: 125 (Tahiti, "Taraourou-roa" = Tarauru-Roa; Syn.); 1962: 68 (Biogeography "Tahiti-Tuamotu"). - Monteforte, 1984: 171, annex 1, tab. a (Makatea, Mataiva, Moorea, Tahiti, Takapoto). - Delesalle, 1985: 289 (Mataiva). - Guinot, 1985: 450 (List). - Poupin, 1994a: 52, fig. 48, pl. 6c (Kamaka, Moruroa, Taiaro; coll. Frv Marara); 1996a: 65 (Checklist). - Unpublished specimen, coll. & det. G. Paulay, Rangiroa, October 13, 2001, ca. 1 km S. of NW point of atoll, off Motu Maeherehonae (FLMNH-UF 1460); also Rangiroa (FLMNH-UF 1549, 1683); coll. BENTHAUS Expedition (Richer), November 16, 2002, Raevavae, seashore, det. J. Poupin November 25, 2003 (2 spp. in MNHN collections; larger sp. photographed, 1 ov. female from Motu, photographed). - Moorea Biocode project. - AAMP, Marquesas, 2012, Leg 3, St. MQ5-M, coll. Starmer, Poupin, sample JP2 (photo), JP3 (?photo), JP10, St. MQ16-M, Fatu Hiva, intertidal, coll. Corbari et al., sample LC147. - Salvat & Bacchet, 2011: 249, photo, field guide 'Au Vent des Iles Ed. Tahiti - French Polynesia, most often Society (Moorea, Tahiti). - Mission CRIOBE 2014 (collection, Mataiva, 1982, coll. Monteforte).

Other data
Benthaus Polynesie, STATION — Poupin J, Zoosystema 25, 4: 643-664

References : PDF list, 214 pp (1.4 Mo)

This species in Worms Database