Alguns helmintos de aves colecionadas no Paraguai

Acuaria paraguayensis n. sp. from Sirystes sibilator (Aves: Tyrannidae) in Paraguay and a redescription of A. mamillaris (Molin, 1860) from Cyanocorax cayanus (Corvidae) in Brazil, with a key to the species of Acuaria Bremser, 1811 (Nematoda: Acuariidae) in the New World

“…The latter three records are accompanied by descriptions. The male specimens from all these records are characterised by longer males with smaller spicules than those originally reported for A. mayori (see Lent et al, 1945; Table 2). We consider their identification as A. mayori as uncertain and requiring further studies.…”

“…parasitising the Corvidae need further studies in view of their morphological similarity. -A. cordonspinosa Baruš & Garrido, 1968 from Vireo griseus noveboracensis (Gmelin) (Vireonidae) in Cuba (Baruš & Garrido, 1968); -A. cyanocitta (Boyd, 1956) Skryabin, Sobolev & Ivashkin, 1965 from Cyanocitta cristata in the USA (Boyd, 1956); Williams, 1929 from Sturnella neglecta Audubon (Icteridae) in the USA (Williams, 1929); -A. mamillaris (Molin, 1860) Railliet, Henry & Sisoff, 1912 from Cyanocorax cayanus (L.) (Corvidae) in Brazil (Molin, 1860); -A. mayori Lent, Freitas & Proença, 1945 from Cyanocorax chrysops (Vieillot) from Paraguay (type-host and locality) (Lent et al, 1945). There are several further records of this species: from C. cyanomelas (Vieillot) (Corvidae) in Brazil (Pinto et al, 1997); from Sporophila caerulescens caerulescens (Vieillot) (Thraupidae) in Brazil (Pinto et al, 1991); from Sicalis flaveola (L.) (Thraupidae) in Brazil (Rodrigues et al, 2005); and from Myiarchus nuttingi (Ridgway) (Tyrannidae) in Costa Rica (Zhang et al, 2003).…”

“…mayori has been described from Cyanocorax chrysops (Vieillot) in Paraguay (Lent et al, 1945). The original description of this species and A. mamillaris are morphologically similar in terms of their body lengths, maximum body widths and the lengths of the muscular and glandular oesophagus (Table 2).…”

“…Distance (mm) from the posterior end of the body to the vulva ** Distance (mm) from the anterior end of the body to the vulva *** This ratio was not reported in the original description(Lent et al, 1945); the intervals given here are the values obtained after dividing the extreme values of the cordon lengths by the extreme values of the body length…”

New records for the nematodes Ascaridia columbae (Gmelin) Travassos, Acuaria mayori Lent, Freitas & Proença and Aproctella stoddardi Cram in Brazilian birds, with redescription of the species

“…Male ( Remarks: In spite of its wide geographical distribution, this species, althoug referred previously ocurring in Brazil, was poorly figured (male caudal extremity) only at the beginning of the century (TRA VASSOS, 1913 Acuariidae Seurat, 1913 Acuaria mayori Lent, Freitas & Proen~a, 1945 Figs 4, 5, 7…”