{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T12:07:01Z","timestamp":1791288421425,"version":"4.3.0"},"reference-count":24,"publisher":"Cambridge University Press (CUP)","issue":"4","license":[{"start":{"date-parts":[[2017,7,31]],"date-time":"2017-07-31T00:00:00Z","timestamp":1501459200000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Helminthol."],"published-print":{"date-parts":[[2018,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p><jats:italic>Procyrnea choique<\/jats:italic>n. sp. is described from the lesser rhea,<jats:italic>Rhea pennata<\/jats:italic>d\u00b4Orbigny (Aves: Rheidae), from the Protected Natural Area Pen\u00ednsula Vald\u00e9s, Chubut province, Argentina. The new species resembles<jats:italic>P. ficheuri<\/jats:italic>,<jats:italic>P. murrayi<\/jats:italic>,<jats:italic>P. excisiformis<\/jats:italic>,<jats:italic>P. dollfusi<\/jats:italic>,<jats:italic>P. haliasturi<\/jats:italic>,<jats:italic>P. anterovulvata<\/jats:italic>,<jats:italic>P. graculae<\/jats:italic>,<jats:italic>P. brevicaudata<\/jats:italic>,<jats:italic>P. uncinipenis<\/jats:italic>,<jats:italic>P. javaensis<\/jats:italic>,<jats:italic>P. ameerae<\/jats:italic>,<jats:italic>P. ornata<\/jats:italic>,<jats:italic>P. aegotheles<\/jats:italic>,<jats:italic>P. spiralis<\/jats:italic>,<jats:italic>P. ruschii<\/jats:italic>and<jats:italic>P. aptera<\/jats:italic>, mainly in the absence of lateral alae; but differs from its congeners by having a left spicule without barbs, the position of the vulva which is post-equatorial, the absence of lateral ridges, absent median precloacal papilla, asymmetrical caudal alae, males more than 6 mm long, left spicule 1 mm long and spicule ratio 1:3. Our results extend the taxonomy of<jats:italic>Procyrnea<\/jats:italic>Chabaud, 1958 and comprise the first report of a habronematid from<jats:italic>R. pennata.<\/jats:italic>A key to species of<jats:italic>Procyrnea<\/jats:italic>is presented.<\/jats:p>","DOI":"10.1017\/s0022149x17000657","type":"journal-article","created":{"date-parts":[[2017,7,31]],"date-time":"2017-07-31T10:07:56Z","timestamp":1501495676000},"page":"504-513","source":"Crossref","is-referenced-by-count":7,"title":["A new species of<i>Procyrnea<\/i>(Nematoda: Habronematidae) parasitic in<i>Rhea pennata<\/i>(Aves: Rheidae) from Patagonia, Argentina, with a key to species of the 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