Email zadetek: Poecilancistrium caryophyllum (Diesing, 1850) (Cestoda, Trypanorhyncha), parasito de Macrodon ancylodon (Bloch & Schneider, 1801) do litoral Norte do Brasil Poecilancistrium caryophyllum (Diesing, 1850) (Cestoda, Trypanorhyncha), parasite of Macrodon ancylodon (Bloch & Schneider, 1801) from the Northern littoral of Brazil