Revista Mexicana de Biodiversidad www.ib.unam.mx/revista/ Revista Mexicana de Biodiversidad 86 (2015) 888-895 Taxonomy and systematicsRedescription of Tanaisia dubia (Digenea) from the northeast region of Argentina, with a key to Neotropical species of the genus, and a key to genera of Tanaisiinae
The digenean fauna of six species of falconiform birds from northeastern Argentina is reported and a new species and several new hosts and geographical records are presented. Strigea proteolytica n. sp. (Strigeidae) is described from Buteogallus urubitinga and distinguished from their congeners by the combination of the following characters: plump body, conspicuous proteolytic gland, forebody with scarce vitelline glands, copulatory bursa with a well developed muscular ring (Ringnapf), and absence of true neck region in hindbody. Six previously known species are breifly described: Strigea falconis brasiliana Szidat, 1929 (Strigeidae) from Milvago chimachima and Caracara plancus; Neodiplostomum travassosi Dubois, 1937 from Buteogallus meridionalis; Tylodelphys brevis Drago & Lunaschi, 2008 and Posthodiplostomum macrocotyle Dubois, 1937 (Diplostomidae) from Busarellus nigricollis; Spaniometra variolaris (Fuhrmann, 1904) (Cyclocoelidae) and Megalophallus deblocki Kostadinova, Vaucher & Gibson, 2006 (Microphallidae) from Rostrhamus sociabilis. Literature records and information on distribution and host-parasite relationships is presented.
Two species of nematodes, Rhabdias cf. elegans (Rhabdiasidae) and Aplectana hylambatis (Cosmocercidae), were recovered from the lungs and intestine of Trachycephalus typhonius (Anura: Hylidae) captured in Formosa Province, Argentina. Morphological and morphometric data of both species are provided, and previous records of Rhabdias spp. in the Neotropical region are summarized. The finding of Rhabdias cf. elegans constitutes the first record of this genus in the Formosa Province, and the finding of A. hylambatis represents the first record of this species as a parasite of hylid frogs, and the first report in Formosa Province. Trachycephalus typhonius represents a new host for both parasites.
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SummaryThe aim of this paper is to increase the knowledge on the diversity of digenean parasites from birds collected in northeastern Argentina. The helminthological survey of four bird species revealed the presence of five digenean species and one acanthocephalan species.
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