Decapoda - Brachyura - Portunidae - Portunus
| Portunus convexus De Haan, 1835 |
World Distribution
Apel & Spiridonov (1998 : 286), Vannini & Innocenti (2000 : 263) pour Portunus convexus. Indo-ouest Pacifique. Comprend Afrique orientale, Erithrée, Somalie, Europa, Madagascar, Seychelles, Réunion, Maurice, Indonésie. Egalement Guam. Comprend Mayotte, premier signalement.
Guam from Paulay G., Kropp R., Ng P. K. L. & Eldredge L. G. 2003. – The crustaceans and pycnogonids of the Mariana Islands. Micronesica 35-36: 456-513.
French Polynesia - this database, photo from Tubuai.
Environnement : Marine - Substrat/Association : Soft bottom (mud or sand)
Vertical range : Shallow-waters (0-100 m) - Min-Max observed: 1-5 m
Mayotte data
Portunus convexus De Haan, 1835
Material examined — Mayotte KUW 2009, no specimen collected, only color photograph (C. Hily) transmitted before fieldwork by P. Froui n, University Réunion, 18 April 2009, northeastern large reef, 1 sp. about 30 x 66 (with spines) mm sandy bottom near seagrass beds of Thalassodendron. Det. J. Poupin from photo.
Remarks — Portunus convexus is recognized herein from a photograph only with a few conspicuous characters: carapace pubescent; frontal teeth rounded; anterolateral margin of carapace with 9 spines, posteriormost the larger; two lateral paler patches outlined in brown on posterior carapace. Portunus pubescens (Dana, 1852) is very similar and could be also considered but Portunus convexus is choosen by using Stephenson (1972: 15) key and presence of pale patches on posterior carapace.
Geographic and depth ranges — IWP, Erithrea, Somalia, Mayotte (this work) to Guam, French Polynesia; subtidal.
Europa data
Portunus convexus. - Dérijard, 1966 : 163 (Europa)
Réunion data
Neptunus sieboldi - A. Milne-Edwards, 1862, annexe F : 2 (Réunion, coll. Maillard). - Portunus (Portunus) convexus - Ng et al., 2008 : 152 (Synonyme, et Liste à jour des noms valides). - Coll. BIOLAVE, 12/01/2011, shallow-waters, divers 10-30 m, det. J. Poupin based on color photo, 9/01/2013
Central Pacific data (Wallis & Futuna, Polynesia, Clipperton, Easter Island)
FRENCH POLYNESIA - Portunus pubescens - Det. J. Poupin from carapace photos by Miller at Tubuai Island, 2006-2008. Det. corrected in Octobre 2017 into Portunus convexus (cf. photo G. Paulay of a specimen from Guam).
References : PDF list, 214 pp (1.4 Mo)This species in Worms Database