Pseudorhombila quadridentata ( Latreille, 1828 )

Cintra, Flavio de Almeida Alves-Júnior Girlene Fábia Segundo Viana Maria Fernanda Abrantes Torres Kátia Cristina de Araújo Silva Israel Hidenburgo Aniceto, 2021, New distributional records of species of the family Pseudorhombilidae Alcock, 1900 (Crustacea: Decapoda) from Brazilian waters, Nauplius (e 2021016) 29, pp. 1-10 : 4-5

Pseudorhombila quadridentata ( Latreille, 1828)

( Figs. 2A–E , 4C–D , 5 )

Melia quadridentata Latreille, 1828: 706 .

Pseudorhombila quadridentata . — Guinot, 1969a: 704, fig. 112, pl. 3, fig. 1. — Hernández Aguilera, 1982: 2, figs. 1C, D, 2C, 3C, 4C, 5C, 6C. — Martínez-Iglesias and Gómez, 1994: 29, figs. 4–6. — Hendrickx, 1995: 14, fig. 3C. — Melo, 1996: 413. — Boschi, 2000: 122 (in list). — Silva and Calado, 2002: 116, fig. 1. — Coelho et al., 2008: 35 (in list). — Felder et al., 2009: 1084 (in list).

Material examined. 2 males (CL = 45–48 mm; CW = 38–41 mm), Revizee / Norte , R / V Almirante Paulo Moreira col. , Amapá, Station #11, (3°40’N 50°25’W), 12 September 1999 ,114 m, gravel bottom, MOUFPE : 19994.

Geographic distribution. USA (Florida), Gulf of Mexico, Cuba, West Indies, Mexico, Colombia (Atlantic side), and Brazilian states of Amapá (present record), Alagoas, and Bahia (Abrolhos) ( Martínez-Iglesias and Gómez, 1994; Melo, 1996; Silva and Calado, 2002; Coelho et al., 2008) ( Fig. 5 ).

Remarks. The characteristics of the P. quadridentata specimens examined were consistent with the original description provided by Latreille(1828) and additional remarks prepared by Rathbun (1906), Guinot (1969a), and Hernández Aguilera (1982). Pseudorhombila quadridentata is widely distributed in the western Atlantic, which is similar to other closely related species (see remarks of P. octodentata ), however, with disjunct records especially in the Caribbean Sea (recorded only from Colombia) and in Brazil (only two previous records, in the states of Alagoas and Bahia), but it is a common species in the Gulf of Mexico (see Fig.5 ). In Brazil, these records were made by Melo (1996) and Silva and Calado (2002), between the depths of 20 and 64 m, on bottoms of gravel and mud along the continental shelf. However, in the present work, the specimens were found at a depth of 114 m, increasing the bathymetric distribution to deeper waters. Coelho et al. (2008) compiled several records of brachyuran and anomuran crabs from Brazilian waters, however, these records were only based on published literature (without examined material). Thus, the present work is the first record of P. quadridentata from the North region of Brazil (state of Amapá) and only the second record after 18 years for this species.

Figures

Figure 2. Pseudorhombila quadridentata (Latreille,1828), male; dorsal habitus (A), thoracic sternum, abdominal somites and telson (B), frontal view (C), pleonal somites 1–3, right cheliped (P1) (D), 114 m, MOUFPE: 19994. Scale bar: 1 cm.

Figure 4. Gonopod 1 (G1) of male specimens: Pseudorhombila octodentata Rathbun, 1906 (A), P. octodentata (G1) distal region in detail (B), Pseudorhombila quadridentata (Latreille, 1828) (C), P. quadridentata (G1) distal region in detail (D), Robertsella meridionalis Tavares and Gouvêa, 2013 (E), R. meridionalis (G1) distal region in detail (F). Scale bar: 0.5 mm.

Figure 5. Geographic distribution of the Pseudorhombilidae from the Western Atlantic: Pseudorhombila octodentata Rathbun, 1906 (circle); P. quadridentata (Latreille, 1828) (square); Robertsella meridionalis Tavares and Gouvêa, 2013 (star). Black symbols = previous records; Gray symbols = new records.