Abstract
The pilumnid crab Pilumnus reticulatus Stimpson, 1860 is known to range from the Caribbean Sea to Argentina (Atlantic). It has also been recorded from the Pacific coast of Panama. Larvae of Pilumnus reticulatus from females collected in the mouth of the Rio de la Plata were reared in the laboratory from zoea I to megalopa. A reappraisal of larval characters is made by comparing the results of this present study with the previous descriptions of Montu et al. (1989) and with those from other Pilumnus species: P. dasypodus, P. sayi, P. vespertilio, P. hirtellus, P. kempi, P. scabriusculus and P. minutus.
Highlights
Pilumnid crabs inhabit coastal waters worldwide and belong to the family Pilumnidae of the superfamily Xanthoidea (Guinot, 1977)
1815, complete zoeae development has been published for the following species: P. dasypodus
Pilumnus reticulatus is known from the Caribbean to the north of Argentina, and along the Pacific coast of Panama
Summary
Pilumnid crabs inhabit coastal waters worldwide and belong to the family Pilumnidae of the superfamily Xanthoidea (Guinot, 1977). Seven species of Pilumnus have been recorded from the coasts of the southwestern Atlantic (Melo, 1996). Pilumnus reticulatus is known from the Caribbean to the north of Argentina, and along the Pacific coast of Panama. It inhabits mainly the intertidal or shallow waters, but may reach 75 m in LARVAL DEVELOPMENT OF PILUMNUS RETICULATUS 5 depth. It is the only species in the genus that crosses the Rio de la Plata biogeographical barrier (Rathbun, 1930; Boschi, 1964; Melo, 1996).
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