First record of the genus Syncuaria (Nematoda: Acuariidae) in Argentina, with description of a new species.

DIGIANI, MARÍA CELINA

FOLIA PARASITOLOGICA

Lugar: Ceské Budéjovice; Año: 1999 vol. 46 p. 139 - 144

0015-5683

The nematode genus Syncuaria Gilbert, 1927 (Acuariidae) is reported for the first time from Argentina with two species parasitic in Threskiornithidae. Syncuaria plegadisi sp. n. from the white-faced ibis, Plegadis chihi (Vieillot), is described and figured. The new species differs from known species of Syncuaria by the following characters: absence of lateral alae; cephalic cordons narrow, consisting of cuticular plates dorsally and ventrally invaginated forming a groove; presence of cephalic spines; spicules with simple, rounded distal ends; left spicule two to three times longer than right one; female tail dorsally bent and distance between vulva and anus comparable to tail length. Syncuaria diacantha Petter, 1961, a common parasite of the roseate spoonbill, Platalea ajaja L., is reported for the first time from Argentina and briefly described. SEM microphotographs for both species are provided. Both S. plegadisi sp. n. and S. diacantha were found to co-occur in the same locality, but not on the same host, suggesting a high degree of host specificity.