Tetrameres (Tetrameres) megaphasmidiata n. sp. (Nematoda: Tetrameridae), a parasite of the two-banded plover, Charadrius falklandicus, and white-rumped sandpiper, Calidris fuscicollis, from Patagonia, Argentina

FLORENCIA CREMONTE; DIGIANI MC; LUIS O, BALA; NAVONE, GRACIELA T

JOURNAL OF PARASITOLOGY

AMER SOC PARASITOLOGISTS

Año: 2001 vol. 87 p. 148 - 151

0022-3395

Tetrameres (Tetrameres) megaphasmidiata n. sp. is described from the proventriculus of  the two-banded plover Charadrius falklandicus and the white-rumped sandpiper Calidris fuscicollis from Patagonia, Argentina. The new species shares with T. (T.) nouveli, T. (T.) paradisea, T. (T.) prozeskyi, T. paraaraliensis, T. (T.) cladorhynchi, and T. lobybicis the absence of the right spicule and the presence of 4 rows of somatic spines. Tetrameres (T.) megaphasmidiata n. sp. differs from the first 4 species mainly by its longer left spicule. The new species can be distinguished from T. (T.) cladorhynchi by the extension of the lateral alae, the number and arrangement of the caudal papillae, and the absence of polar filaments in the eggs. Tetrameres lobybicis differs from the new species by having shorter rows of dorsal spines and a different number and arrangement of the caudal papillae. This represents the first record of a species of Tetrameres in C. falklandicus and C. fuscicollis.