Euchirograpsus americanus A. Milne-Edwards,

Alves-Júnior, Flavio de Almeida, Santana, Julianna de Lemos & Souza-Filho, Marina de Sá Leitão Câmara de Araújo and Jesser Fidelis de, 2016, First record of Euchirograpsus americanus A. Milne-Edwards, 1880 (Crustacea: Decapoda: Plagusiidae) from northeastern Brazil, Nauplius (e 2016023) 24, pp. 1-4 : 2-4

Euchirograpsus americanus A. Milne-Edwards,

1880

(Fig. 1A–C)

Material examined. 1 ovigerous female (CL 8.52 mm, CW 9.08 mm, AW 6.98 mm), Potiguar Basin, MT– 52–2, 04°44’S 036°25’W, 23 May 2011, 180 m, 28.8°C, salinity 36.6, MOUFPE 15697 .

Geographic distribution. Western Atlantic– Canada (Bay of Fundy), USA (towards the Carolina’s in Toms/ Meys Canyon and Baltimore Canyon, Massachusetts in Canyon at the edge of Georges Bank, New Jersey, Louisiana, Florida), Gulf of Mexico, Dry Tortugas, Cuba, Caribbean Sea, Antilles, West Indies, Barbados, Colombia, Venezuela and Brazil (Potiguar Basin - Rio Grande do Norte and Rio Grande do Sul) ( Zariquiey Alvarez, 1968; Türkay, 1975; Melo, 1996; 1998; Wilson and Pohle, 2016).

Remarks. The single specimen is in agreement with the original description of A. Milne-Edwards (1880), as well as subsequent descriptions by A. Milne-Edwards and Bouvier (1894), Rathbun (1918), Türkay (1975) and Melo (1996). The species was represented by only one specimen among 30 sampling stations in the Potiguar Basin.

The only two species of genus Euchirograpsus found in Brazil ( E. americanus and E. antillensis ) are very similar to each other; however, E. americanus has three to four subdistal teeth on the inferior margin of the merus of the second pair of pereopods, being at least one of them larger, versus all short and of the same length in E. antillensis ; moreover, the lateral spines of the carapace are slightly longer in E. antillensis than in E. americanus ( Türkay, 1975, fig. 16) (Fig. 1C).

Some specimens of Euchirograpsus were identified as E. americanus from Galapagos Islands and Madagascar by Crosnier and Thomassin (1975), but, after further review, the individuals were described as two new species, Euchirograpsus pacificus and Euchirograpsus madagascariensis by Türkay (1975; 1978). Until the revision by Türkay (1975), E. americanus was also wrongly recorded in the eastern Atlantic non encore signalés. Bulletin du Muséum National d’Histoire Naturelle, Paris, 214: 711–741.

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