A description of the first zoeal stage of Pilumnus vinaceus A. Milne-Edwards, 1880 (Decapoda, Pilumnidae), with a revision of the first zoea morphology of Pilumnus Leach, 1815

The morphology of the first zoeal stage Pilumnus vinaceus is described and compared with zoea I all species in literature. Two ovigerous females P. were maintained aquarium facilities until larvae hatch. each female dissected using a stereoscopic microscope. has common characteristics among Pilumnidae as: [1] antenna type 2; [2] maxilliped 1 2+2+3+3 setae on basis 3,2,1,2,5 endopod; [3] 2 1+1+1+1 1,1,6 [4] telson furcal rami armed dorsal lateral spines. Considering that occur western Atlantic, it becomes possible to identify by means verification following characteristics: pleonites mediolateral processes; number antennule. It however, important consider there still great deficit knowledge about larval forms assigned we argue favor new descriptions build more robust dataset characters use phylogenetic context genus.