First known occurrence of the alpheid shrimps Leptalpheus forceps Williams, 1965 and L. marginalis Anker, 2011 (Decapoda: Caridea) in the state of Para, Amazon region, Brazil

In the present study, we report for the first time the occurrence of the alpheid shrimps Leptalpheus forceps Williams, 1965 and Leptalpheus marginalis Anker, 2011 in the state of Park in northern Brazil. Both Leptalpheus species (males, non-ovigerous females, and females carrying eggs) were collected from the burrows of the callichirid ghost shrimp, Lepidophthalmus siriboia Felder & Rodrigues, 1993, in a muddy -sandy intertidal zone of the Ajuruteua Peninsula, in the Braganca region. These records update the known geographical distribution of the two species, with L. forceps extending its Brazilian occurrence from the state of Bahia to state of Park and L. marginalis which was exclusively found on the Caribbean coast of Colombia is now recorded in Brazil.