New species of Procyrnea (Nematoda: Habronematidae) parasitic in Rhea pennata (Aves: Rheidae) from Patagonia, Argentina, with a key to species of the genus

ESTEFANÍA BAGNATO; MARTÍN FRIXIONE; MARÍA CELINA DIGIANI; FLORENCIA CREMONTE

JOURNAL OF HELMINTHOLOGY

CAMBRIDGE UNIV PRESS

Lugar: Cambridge; Año: 2018 vol. 92 p. 504 - 513

0022-149X

Procyrnea choique n. sp. is described from the Lesser Rhea, Rhea pennata d´Orbigny (Aves: Rheidae) from Protected Natural Area Península Valdés, Chubut province, Argentina. The new species resembles P. ficheuri, P. murrayi, P. excisiformis, P. dollfusi, P. haliasturi, P. anterovulvata, P. graculae, P. brevicaudata, P. uncinipenis, P. javaensis, P. ameerae, P. ornata, P. aegotheles, P. spiralis, P. ruschii, and P. aptera mainly in the absence of lateral alae but differs from its congeners by having left spicule without barbs, the position of vulva which is post-equatorial, absence of lateral ridges, median precloacal papilla absent, caudal alae asymmetrical, males more than 6 mm long, left spicule 1 mm long, spicule ratio 1:3. Our resultsextend the taxonomy of Procyrnea Chabaud, 1958 and comprise the first report of a habronematid from R. pennata. A key to species of Procyrnea is presented.