Decapoda - Caridea - Alpheidae - Alpheus

Alpheus armatus Rathbun, 1901

World Distribution
Knowlton et al. (Internet) - 0-10 m. Tropical Western Atlantic [WA]: Caribbean from Yucatan to Panama and Trinidad and Tobago and north to Florida and Bahamas, obligate associate of the corkscrew anemone, Bartholomea annulata.

Environnement : Marine - Substrat/Association : Associated with anemones

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

Lesser Antilles data
Distribution: VGI (St Thomas, Tortola, Virgin Gorda), Lesser Antilles, ICA (St Martin, St Eustatius, St Kitts, Antigua, Guadeloupe, Martinique, St Lucia, Tobago, Trinidad), IOV (Margarita, Cubagua, Blanquilla, Tortuga, Los Roques, Curaçao). 0-10 m. WA.
Crangon armatus - Schmitt, 1935: 142, St Thomas. - Schmitt, 1936: 367, Curaçao [coll. P. Hummelinck, 1930]
Alpheus armatus - Chace, 1956: 146, Los Roques. - Chace, 1972: 62, Tortola, Virgin Gorda, St Kitts, Antigua, St Lucia, Tobago. - Rodríguez, 1986, tab. 2, Los Roques. - Scelzo & Varela, 1988: 36, Blanquilla. - Lira, 2004: tab. 1, Tortuga. - Tagliafico et al., 2005: tab. 1, Margarita (Los Frailes). - Hernández-Ávila et al., 2007: tab. 1, Cubagua. - Faasse, 2016: 52, St Eustatius. - Anker et al., 2017: WebPages, Tobago, Trinidad.
Alpheus armatus - Saint Martin, RNN Inventory 2012, det. A. Anker, UF32346, photo dSTM_6350, 19/4/2012; UF32488, photo dSTM_7629, 25/4/2012. - Guadeloupe, Karubenthos 2012, det. A. Anker MNHN 2014, MNHN-IU-2013-12175, st. GS19, 8 m; det. J. Poupin, based on photo only, st. GR01, 3 m, JL49, with hesitation, A. roquensis cannot be totally excluded. - Martinique, photo in situ, no specimen, Y. Buske 2014, Caye Grande Sèche, det. Poupin based on yellow spots on chelipeds, with hesitation, A. polysticus also possible because a few white spots on larger cheliped; groupe BIOSPHERES, November 2015, coll. R. Ferry, Y. Buske, det. Poupin.
Comment : This is a species of the Alpheus armatus species complex including five species; characters useful for recognition are in Almeida & Anker (2011). These are obligate associate of sea anemone (e.g. Bartholomea annulata).

Comment(s) on data
Alpheus armatus is a species complex including: A. armatus, A. immaculatus Knowlton & Keller, 1983, A. polystictus Knowlton & Keller, 1985, A. roquensis Knowlton & Keller, 1985 and Alpheus rudolphi Almeida & Anker, 2011. A. armatus has yellow marks on chelipeds.
DORIS, 6/8/2011 at, Guadeloupe, written by A. Goyeau
Knowlton et al., 2016: webpages,

References : PDF list, 214 pp (1.4 Mo)

This species in Worms Database