RESUMO
A new species of the genus Brueelia Kéler is described as parasitic on the Common Diuca-Finch, Diuca diuca diuca, based on specimens from three localities in Chile: Punitaqui (Coquimbo Province), La Rinconada (Colchagua Province) and Chillán (Ñuble Province). The species is fully described and illustrated, and brief comments on its morphological affinities with allied species are also made.
Se describe una nueva especie del genero Brueelia Kéler parasitando a la diuca, Diuca diuca diuca, basado en especimenes de tres localidades de Chile: Punitaqui (Coquimbo Province), La Rinconada (Colchagua Province) y Chillán (Ñuble Province). La especie es descrita e ilustrada comentando sus semejanzas morfológicas con especies afines.
Assuntos
Animais , Tentilhões/parasitologia , Ftirápteros/classificação , Chile , Ftirápteros/anatomia & histologiaRESUMO
Three new coccidian (Apicomplexa: Eimeriidae) species are reported from the lesser seed-finch, Oryzoborus angolensis from Brazil. Sporulated oocysts of Isospora curio n. sp. are spherical to subspherical; 24.6 Î 23.6 (22-26 Î 22-25) mum, shape-index (SI, length/width) of 1.04 (1.00-1.15). Oocyst wall is bilayerd, ~ 1.5 mum thick, smooth and colourless. Micropyle and oocyst residuum are absent. The sporocysts are ovoid, 13.2 Î 10.9 (15-17 Î 10-13) mum, SI = 1.56 (1.42-1.71), with a small Stieda body and residuum composed of numerous granules scattered among the sporozoites. Sporozoites are elongated and posses a smooth surface and two distinct refractile bodies. Oocysts of Isospora braziliensis n. sp. are spherical to subspherical, 17.8 Î 16.9 (16-19 Î 16-18) mum, with a shape-index of 1.06 (1.00-1.12) and a smooth, single-layered wall ~ 1 mum thick. A micropyle, oocyst residuum and polar granules are absent. Sporocysts are ellipsoid and slightly asymmetric, 13.2 Î 10.8 (12-14 Î 9-12) mum, SI = 1.48 (1.34-1.61). Each sporocyst contains a barely visible Stieda body and a residuum composed numerous of granules. Sporozoites are elongated and each of them contains two distinct refractile bodies. Oocysts of Isospora paranaensis n. sp. are subspherical to broadly ellipsoid 24.3 Î 19.8 (22-26 Î 18-22) mum, SI = 1.22 (1.15-1.38) with smooth single-layered wall ~ 1.5 mum thick. A micropyle and oocyst residuum are absent, but one distinct ellipsoid polar granule (2.5-3.5 Î 1.5-2.5 mum) is present. Sporocyst are ovoid, 15.7 Î 10.1 (14-18 Î 8-12) mum, SI = 1.46 (1.31-1.72), with distinct Stieda and sub-Stieda bodies. Each sporocyst contains a spherical sporocyst residuum, 4 mum in diameter. All described isosporan species represent a possible cause of acute coccidiosis for O. angolensis in captivity.