NEMATODOS DE LOS MURCIELAGOS DE MEXICO. IV. DESCRIPCION DE UNA NUEVA ESPECIE DEL GENERO RICTULARIA Y BREVES CONSIDERACIONES SOBRE LA SISTEMATICA DE LAS ESPECIES COMPRENDIDAS EN ESTE GENERO

Resumen

For the first time a Nematode of the genus Rictularia Frolich, 1802, is found in Mexico. The new species described in this paper and the one described in 1928 by Travassos in Brazil are the only two that have been found as parasites in the bats of the American Continent.
Rictularia nana n. sp. differs from all the species the females of which measure less than 15 mm. in length, in the structure of the buccal capsule, the number of pairs of "combs" and spines, the localion of the vulva, the number and arrangement of the papillar system and the size of the spicules in the male.
From the other two species that live as parasites in bats it differs in being less than 15 mm. long and in the number of pre-vulvar "combs" which in Rictularia macdonaldi (Dobson, 1880) are from 30 to 32 and in R. plagiostoma (Weld, 1861) from 43 to 44.