Palaemon vulgaris Say, 1818

Herrera-Barquín, Hiram, Leija-Tristán, Antonio & Favela-Lara, Susana, 2018, 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, Check List 14 (2), pp. 479-494 : 484

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).