Pachycheles ackleianus A. Milne-Edwards, 1880

Ferreira, Luciane Augusto De Azevedo & Anker, Arthur, 2021, An annotated and illustrated checklist of the porcelain crabs of Panama (Decapoda: Anomura), Zootaxa 5045 (1), pp. 1-154 : 44-45

Pachycheles ackleianus A. Milne-Edwards, 1880

Pachycheles ackleianus A. Milne-Edwards 1880: 36 ; A. Milne-Edwards & Bouvier 1923: 295, pl. 2, fig. 12, pl. 4, fig. 2; Haig 1956: 13; Haig 1962: 182; Gore 1970: 962; Gore 1974: 705, fig. 2; Werding 1977: 188, fig. 10; Gore 1982: 7; Rodríguez et al. 2005: 554; Rodríguez et al. 2006: 154; Lira et al. 2007: 45, figs. 1f–7f; Ferreira & Melo 2016: 180 , fig. 1E; Diez & Lira 2017: 445 ; Poupin 2018: 148; Ferreira 2019: 62.

Pisosoma angustifrons . — Boone 1930: 70, pl. 18 [not Pisosoma angustifrons Benedict, 1901 ].

(?) Porcellana parrai Guérin-Méneville 1855 : pl. 2, fig. 3.

Material examined. None.

Previous records from Panama. Gore (1970); Gore (1982).

Distribution. West Atlantic. USA (Florida), Mexico, Cuba, Jamaica, Dominican Republic, Puerto Rico, E Less- er Antilles, Panama ( Panama Canal area, San Blas Is.), Colombia, Venezuela, Guyana and Brazil from Pará to Rio de Janeiro (e.g. Gore 1974, 1982; Rodríguez et al. 2005; Lira et al. 2007; Ferreira & Melo 2016; Diez & Lira 2017; Ferreira 2019).

Ecology. Intertidal and (more common) subtidal, presently known depth range: 0–82 m; associated with sponges, e.g. loggerhead sponge, Spheciospongia vesparia (Lamarck) (Gore 1974) .

Remarks. Despite the fact that P. ackleianus is one of the most widespread species of the genus in the western Atlantic, there are only a few records of the species from Panama, with no recently collected material available to the authors. Living crabs are pale brown with whitish patches on the carapace and P1–P4, and a longitudinal dorsal white line on the carapace ( Werding 1977).