Resumo

LUNASCHI, Lía I.; DRAGO, Fabiana B.  e  NUNEZ, Verónica. Two new species of Echinostoma (Digenea: Echinostomatidae) from Argentinean birds. Rev. Mex. Biodiv. [online]. 2018, vol.89, n.2, pp.356-364. ISSN 2007-8706.  https://doi.org/10.22201/ib.20078706e.2018.2.2026.

Two new species of Echinostoma from Argentinean birds are described, illustrated and compared with morphologically close species. Echinostoma guirae n. sp. found parasitizing the intestine of Guira guira (Cuculidae) from Formosa Province is characterized by having 35 collar spines with the following arrangement: 4 angle spines on each lappet, 8 lateral spines in a single row on each side, and 11 dorsal spines in a double row. Echinostoma jacanae n. sp. from the intestine of Jacana jacana (Jacanidae) from Buenos Aires Province is mainly characterized by having 45 collar spines arranged as follow: 4 angle spines on each lappet, 3 lateral spines in a single row on each side, and 31 dorsal spines in a double row. Moreover, we provide taxonomic comments on the validity of some species of this genus and regarded Echinostoma parvum Lutz, 1925 as species inquirenda.

Palavras-chave : Guira guira; Echinostoma guirae n. sp.; Jacana jacana; Echinostoma jacanae n. sp.; Argentina.