title: Two new species of Rhabdias Stiles et Hassall, 1905 (Nematoda: Rhabdiasidae) from anuran amphibians in Pará, Brazil.
abstract: Two new lung-dwelling nematode species of the genus Rhabdias Stiles et Hassall, 1905 were discovered in Caxiuanã National Forest, Pará state, Brazil. Rhabdias galactonoti sp. n. was found in a dendrobatid frog Adelphobates galactonotus (Steindachner). The species is characterised by the regularly folded inner surface of the anterior part of the buccal capsule seen in apical view, flask-shaped oesophageal bulb and narrow, elongated tail. Rhabdias stenocephala sp. n. from two species of leptodactylid frogs, Leptodactylus pentadactylus (Laurenti) (type host) and L. paraensis (Heyer), is characterised by a narrow anterior end that is separated from the remaining body by a constriction. Both species possess six small but distinct lips, a cuticle that is inflated along the whole body, a doliiform buccal capsule separated into a longer anterior and a shallow, ring-shaped posterior part, lateral pores in the body cuticle and zones of spermatogenesis in the syngonia. Rhabdias galactonoti sp. n. is the first species of the genus found in Dendrobatidae; R. stenocephala sp. n. is the second species described from Leptodactylidae in eastern Amazonia.
authors.affiliation: Department of Parasitology, I. I. Schmalhausen Institute of Zoology, Kyiv, Ukraine;
authors.forename: Yuriy
authors.initials: Y
authors.lastname: Kuzmin
authors.affiliation: Laboratorio de Biologia Celular e Helmintologia Profª Drª Reinalda Marisa Lanfredi, Instituto de Ciencias Biologicas, Universidade Federal do Para, Belem, PA, Brazil;
authors.forename: Francisco Tiago de
authors.initials: FT
authors.lastname: Vasconcelos Melo
authors.affiliation: Laboratorio de Zoologia e Ecologia de Vertebrados, Instituto de Ciencias Biologicas, Universidade Federal do Para, Belem, PA, Brazil.
authors.forename: Heriberto Figueira da Silva
authors.initials: HF
authors.lastname: Filho
authors.affiliation: Laboratorio de Biologia Celular e Helmintologia Profª Drª Reinalda Marisa Lanfredi, Instituto de Ciencias Biologicas, Universidade Federal do Para, Belem, PA, Brazil;
authors.forename: Jeannie
authors.initials: J
authors.lastname: Nascimento Dos Santos
mesh_terms: D000818:Animals; D001001:Anura / Q000469:parasitology*; D001938:Brazil; D008168:Lung / Q000469:parasitology; D008297:Male; D017172:Rhabditoidea / Q000033:anatomy & histology / Q000145:classification*; D013045:Species Specificity
keywords: Adelphobates; Anura; Leptodactylus; Rhabdiasidae; South America; eastern Amazonia; taxonomy