REVIEW ARTICLE Caprellids (Crustacea: Amphipoda) from the Gulf of Mexico, with observations on Deutella mayeri, redescription of Metaprotella hummelincki, a taxonomic key and zoogeographical comments Author Paz-Ríos, Carlos E. Laboratorio de Bentos, Departamento de Recursos del Mar, Cinvestav, Merida, Mexico; Author Guerra-García, José M. Laboratorio de Biología Marina, Departamento de Zoología, Facultad de Biología, Universidad de Sevilla, Sevilla, España Author Ardisson, Pedro-Luis Laboratorio de Bentos, Departamento de Recursos del Mar, Cinvestav, Merida, Mexico; text Journal of Natural History 2014 2014-07-11 48 41 - 42 2517 2578 http://dx.doi.org/10.1080/00222933.2014.931481 journal article 10.1080/00222933.2014.931481 1464-5262 5194444 Deutella incerta ( Mayer 1903 ) ( Figure 5 ) Luconacia incerta Mayer, 1903: 49–50 , pl. 2, figs 11–14, pl. 6, figs 73–75, pl. 9, figs 21, 40, 57. McCain, 1968: 53–54 , 68–72, figs 33–35. McCain and Steinberg, 1970: 53 . Protellopsis stebbingii Pearse, 1908: 30–32 , fig. 4; 1912: 379. Kunkel, 1910: 111–113 , fig. 43. Figure 5. Deutella incerta ( Mayer 1903 ) . Yucatan, Mexico; CYMX-10-CY. Scale bar: 1 mm. Deutella incerta Steinberg and Dougherty, 1957 ; Gable and Lazo-Wasem, 1987: 635– 636 , fig. 4. Ortiz et al., 2002 , fig. 29. Guerra-García, 2003b: 1062–1065 , fig. 3. Foster, Thomas, et al., 2004: 162–164, fig. 4. Diaz et al., 2005: 3–5 , 15, fig. 6. Guerra-García, Krapp-Schickel, et al., 2006: 164–168, figs 9–11. Winfield, Escobar-Briones, et al., 2007: 47, fig. 18. Material examined Station 1, three ovigerous females, CYMX-1- CY . Station 2, one male , one female , CYMX-2- CY . Station 3, three males , one juvenile , CYMX-3- CY . Station 4, two males , three females , CYMX-4- CY . Station 5, two males , two females (one ovigerous), CYMX- 5- CY . Station 6, two males , two females (one ovigerous), CYMX-6- CY . Station 7, one ovigerous female, CYMX-7- CY . Station 13, nine males , three ovigerous females, CYMX- 8- CY . Station 14, one male , CYMX-9- CY . Station 15, two males , two females ( one male and one female from this station used for figures), CYMX-10- CY . Station 10, four males , two ovigerous females, 28 November 2010 , CYMX-20- CY . Station 17, two males , two ovigerous females, CYMX-22- CY . Station 19, two ovigerous females, CYMX-23- CY . Station 29, three females , CYMX-49- CY . Station 30, one male , one female , CYMX- 50- CY . Type locality Off Mobile Bay , Alabama . Distribution Northwestern Atlantic; Gulf of Mexico ; Caribbean Sea ( McCain 1968 ; Oliva-Rivera 2003 ; Foster, Thomas, et al. 2004; Diaz et al. 2005 ; Ortiz and Lalana 2010 ). Records in the Gulf of Mexico MEX : Yalahau Lagoon ( Oliva-Rivera and Jiménez-Cueto 1997 ; present study); Campeche Sound ( Winfield et al. 2006 ); Celestun; Progreso; Dzilam Bravo; Rio Lagartos; El Cuyo; Cabo Catoche (present study). USA : Mississippi-Alabama continental shelf ( Mayer 1903 ); Strait of Florida ( Pearse 1908 ); between Delta of the Mississippi River and Cedar Key ( Pearse 1912 ); Alligator Harbor ( Steinberg and Dougherty 1957 ); Port Isabel; Puerto Aransas; Mobile Bay; Tampa Bay, Key Largo ( McCain 1968 ); St Andrew Bay; St Joseph Bay (Foster, Thomas, et al. 2004). Habitat Deutella incerta shows predatory habits to obtain its food; however, detritus is the dominant stomach content reported ( Caine 1974 ). This species is widely distributed in the temperate and tropical areas of the western North Atlantic ( McCain 1968 ), and has been collected on mangrove roots, Sargassum sp. , Thalassia sp. , sponges, hydroids, alcyonarians, ascidians, coral rubble, sandy bottom, detritus and it has occasionally been taken in plankton tows ( Guerra-García 2003b ; Oliva-Rivera 2003 ; Diaz et al. 2005 ; Guerra- García, Krapp-Schickel, et al. 2006). The depth range reported is shallow water extending to 1470 m ( Winfield et al. 2006 ; Winfield and Escobar-Briones 2008 ; LeCroy et al. 2009 ). Remarks Steinberg and Dougherty (1957) synonymized the monotypic Luconacia of Mayer (1903) with Deutella , transferring L. incerta to Deutella . McCain (1968) re-established Luconacia and claimed several important differences between the genera. Finally Gable and Lazo-Wasem (1987) described a transitional species ( Deutella aspiducha Gable and Lazo-Wasem 1987 ) that allowed them to re-unite Deutella and Luconacia , which was later supported by Guerra-García (2003b) . McCain (1968) did not mention the record of D. incerta to Tampa Bay, although it is represented in his map. Thereby it is assumed to be a valid record.