INVESTIGADORES
DIGIANI Maria Celina
artículos
Título:
Tetrameres (Gynaecophila) aspicula n. sp. (Nematoda, Tetrameridae), a proventricular parasite of the White-faced Ibis Plegadis chihi in Argentina.
Autor/es:
DIGIANI, MARÍA CELINA
Revista:
SYSTEMATIC PARASITOLOGY
Editorial:
Springer
Referencias:
Año: 2000 vol. 47 p. 111 - 117
ISSN:
0165-5752
Resumen:
Tetrameres (Gynaecophila) aspicula n. sp. is described from the proventriculus of the white-faced ibis Plegadis chihi (Vieillot) (Ciconiiformes, Threskiornithidae) from Argentina. The new species is characterised by the absence of spicules, by possessing two ventral rows of extremely small spines in males, extending along the second half of body length, and by the tiny, very feebly developed postcloacal papillae. Tetrameres (G.) aspicula n. sp. is compared to the remainder species in the subgenus as well as to other species of Tetrameres which lack or possess feebly developed spines. The absence of spicules is a character shared with two other species in the genus, T. (G.) gynaecophila and T. (G.) deccani, from which the new species differs by the body size, arrangement of caudal papillae and somatic spination in males. A pair of somatic papillae, previously unreported in species of this genus, was found just on or ventral to the lateral line at variable levels of the body length. The homology of these structures to other paired somatic papillae described in nematodes is discussed.