Updated checklist of estuarine caridean shrimps (Decapoda: Caridea) from the southern region of Laguna Madre, Tamaulipas, Mexico, with new records and a key for taxonomic identification Author Herrera-Barquín, Hiram Author Leija-Tristán, Antonio Author Favela-Lara, Susana text Check List 2018 2018-04-27 14 2 479 494 http://dx.doi.org/10.15560/14.2.479 journal article 10.15560/14.2.479 1809-127X Palaemon vulgaris Say, 1818 Figure 3E, F Material examined ( 187 specimens ). In seagrass beds, tidal zones and presence of oyster reefs. 8 March 2014 (UANL-FCB-C17-8118), S1 ( 24°29.1000ʹ N , 097° 41.4500ʹ W ), 1 specimen ( ♂ ); 8 March 2014 ( UANL- FCB-C 17-8122), S2 ( 24°29.1833ʹ N , 097°41.9667ʹ W ), 96 specimens ( 62♀ , 34♂ ); 4 August 2014 (UANL-FCB- C17-8135), S1 (same point), 15 specimens ( ♀ ); 5 August 2014 (UANL-FCB-C17-8141), S2 (same point), 75 specimens ( 40♀ , 35♂ ); 17 February 2017 (UANL-FCB- C17-8154), S1(same point), 104 specimens ( 45♀ , 59♂ ); 17 February 2017 (UANL-FCB-C17-8157), S2 (same point), 64 specimens ( 30♀ , 34♂ ). Distribution. Southern Gulf of St Lawrence, southward to Cameron County, Texas ; Laguna de Tamiahua, Veracruz ; Laguna Mecoacán, Tabasco ; Río Champotón, Laguna de Términos, Campeche ; near Progreso, Yucatán ; Puerto Morelos , Punta Hualapich and Akumal, Quintana Roo ( Holthuis 1952 , Williams 1984 , Abele and Kim 1986 , Román-Contreras 1988 , Barba-Macías et al. 2005 , Barba- Macías 2012). Previous records from Laguna Madre. Barba-Macías (1999) , Sheridan and Minello (2003) , Sheridan (2004 , Laguna Madre of Texas ), Barba-Macías et al. (2005) , Barba-Macías (2012) . Remarks. The rostrum has 2 teeth on dorsal series behind posterior margin of orbit, 3–5 ventral teeth, the dactylus of the second pereopod is armed with 2 teeth and the immovable finger with 1 tooth on its cutting edge. Our material agreed with descriptions given by Holthuis (1952) , Williams (1984) , and Abele and Kim (1986) . This species was also part of the re-appraisal of the genus Palaemonetes made by De Grave and Ashelby (2013) .