Decapoda - Brachyura - Xanthidae - Paractaea
| Paractaea retusa (Nobili, 1905) |
World Distribution
Serène (1984 : 125) - Océan Indien. Mer Rouge, Afrique orientale, Madagascar, Glorieuses, Seychelles, Maurice. Comprend Europa, Réunion. Mayotte, premier signalement. Also New Caledonia, French Polynesia.
Environnement : Marine - Substrat/Association : Associated with corals (facultative)
Vertical range : Shallow-waters (0-100 m) - Min-Max observed: 0-30 m
Mayotte data
Paractaea retusa (Nobili, 1905)
Material examined — Mayotte KUW 2009, st. 23, Choizil Pass, "Patate à Teddy", 15-30 m, 1 F 5.8 x 7.9 mm, MNHN-IU-2009-3254, det. Octobre 2011; st. 26c, Mutsumbatsou reef flat, coll. Bouchard 03/08/2008, intertidal 1 M 12.5 x 19.0 mm, 1 F 10.8 x 16.4 mm (field id. as P. rufopunctata, see remarks), MNHN-IU-2009-3253, det. September 2011.
Other records — Paractaea retusa retusa - Serène, 1984: 125, fig. 73, pl. XVII A, B, C, Red Sea; Kenya ; Seychelles, Farquhar Island (Seychelles); Madagascar; Europa; Mauritius; Glorieuses, du Lys Island, intertidal; coll. A. Crosnier, 21 January 1971, 1 F 9.5 x 15 mm, MNHN-B6574.
Remarks — This species can be confused with Paractaea rufopunctata (H. Milne Edwards, 1834), the two species being collected at the same station (st. 26c) during Mayotte KUW 2009. Paractea retusa is characterized by: a) anterolateral margins of the carapace with 3 lobes only, the first one being fused with the exorbital angle (4 lobes in P. rufopunctata); b) region 5L on carapace entire (partly splitted in P. retusa); c) region 4L on carapace separated from 'T' tooth (connected to 'T' tooth in P. rufopunctata; for nomenclature of carapace areas and teeth see Serène, 1984: 18, fig. C).
Geographic and depth ranges — IWP, Red Sea, Kenya, Mayotte (this work), Mozambique Channel (Europa) to New Caledonia, French Polynesia; intertidal.
Europa data
Actaea ?retusa Nobili, 1905 - Dérijard, 1968 : 1246 (Europa, 1 femelle 12x19 mm). - Paractaea retusa retusa - Serène, 1984 : 125, fig. 73, pl. XVII A, B, C (Europa, coll. R. Derijard, dét. Guinot, 1969, 1 femelle 12x18,7 mm ; confirme la détermination hésitante de Dérijard, 1968).
Réunion data
Paractaea retusa - Peyrot-Clausade, 1977 : annexe, p. 27 (Réunion). - Réunion - Program BIOLAVE, ARVAM, J.-P. Quod, photo, plate A. Barrère (pl. Q4p2).
New Caledonia data
Nouvelle Caledonie, STATION — Ng P.K.L & Richer de Forges B., Compendium of marine species from New Caledonia, Vol II7: 315-332
Central Pacific data (Wallis & Futuna, Polynesia, Clipperton, Easter Island)
Actaea garretti Rathbun, 1906: 852, pl. 9, fig. 8 (Society). - Actaea rufopunctata - Holthuis, 1953: 11 (Raroia). - Morrison, 1954: 16 (Raroia). - Forest & Guinot, 1961: 79, fig. 79a-b (Tahiti) - All, not Paractaea rufopunctata (H. Milne Edwards, 1834) = Paractaea retusa form hippocrepica nov. in Guinot (1969: 256). - Paractaea retusa form hippocrepica - Guinot, 1969: 256, fig. 30 (Tahiti, Raroia; Syn.); 1985: 451 (List). - Peyrot-Clausade, 1989: 115 (Moorea). - Paractaea retusa - Monteforte, 1984: 171, annex 1, tab. a; 1987: 9 (Moorea). - Poupin, 1996a: 43 (Checklist). - Remark: Guinot (1969: 255), when creating the new genus Paractaea, has examined the syntype of garretti from the Gilbert's islands (but not the specimen from the Society), and considers that Rathbun's species belongs to Paractaea retusa (Nobili) form garretti (Rathbun). - Mission CRIOBE 2014 (collection, Moorea, 1982, coll. Monteforte, det. J. Forest).
References : PDF list, 214 pp (1.4 Mo)This species in Worms Database