Pachycheles calculosus Haig, 1960

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 : 47

Pachycheles calculosus Haig, 1960

Pachycheles calculosus Haig 1960: 136 , pl. 10, pl. 31, fig. 4; Gore & Abele 1976: 19; Gore 1982: 8; Lazarus-Agudelo & Cantera-Kintz 2007: 229.

Material examined. None.

Previous records from Panama. Gore & Abele (1976); Gore (1982); Miranda & Mantelatto (2016).

Distribution. East Pacific: Mexico, El Salvador, Costa Rica, Panama (Isla Venao, Panama Canal area, vicinity of Ciudad de Panamá, including Amador Causeway and “Recife de Casa de Putas”), Colombia and Ecuador ( Gore 1982; Miranda & Mantelatto 2016).

Ecology. Intertidal and shallow subtidal, known depth range: 0–8 m; under rocks, in crevices of corals and among sponges ( Haig 1960; Gore & Abele 1976).

Remarks. Pachycheles calculosus is closely related to P. greeleyi ( Rathbun, 1900) from Brazil. Both species have the carapace and P1 devoid of setae; the P1 covered with granules; the telson with seven plates; and no pleopods in males. However, in P. greeleyi , the carapace is somewhat rugose and the outer (lateral) orbital angle is produced into a distinct tooth, which is not the case in P. calculosus ( Haig 1960) .