New records of Fredius denticulatus (H. Milne-Edwards, 1853) and F. reflexifrons (Ortmann, 1897), and the eastern limits of the distribution of pseudothelphusid crabs (Crustacea: Decapoda) in Brazil

Novos registros de Fredius denticulatus (H. Milne-Edwards, 1853) e F. reflexifrons Ortmann, 1897) e o limite oriental da distribuição dos carangueijos da família Pseudothelphusidae (Crustacea: Decapoda) no Brasil

The occurence of Fredius reflexifrons (Ortmann, 1897), a pseudothelphusid crab widely distributed in the Amazon region and the Atlantic Guianas, is recorded from the state of Ceará, northeastern Brazil. Other records of this species and Fredius denticulatus (H. Milne-Edwards, 1853) from the Amazon region are also presented. A discussion is made on the eastern limits of the distribution of the family Pseudothelphusidae in Brazil.

Pseudothelphusidae; Fredius; taxonomy; geographical distribution; new record