Parasitology, Harold W. Manter Laboratory of


Date of this Version

June 2001


Published in the Journal of Parasitology, v. 87, no. 3 (2001): 656-659. Copyright 2001, the American Society of Parasitologists. Used by permission.


Individuals of a new species of Vexillata were collected from the small intestines of Liomys pictus from the Estacio´n de Biologı´a Chamela, in Jalisco State, Mexico. The new species shows an array of characters that allow us to recognize it as a member of Vexillata; however, it can be distinguished from other species of the genus in that males possess an asymmetrical caudal bursa, females possess a characteristic cuticular inflation at the level of the ovijector, and both sexes possess a synlophe with 9 ridges at the midbody. Additional detail of the synlophe of Vexillata armandae Gardner et al., 1994 from Chaetodipus hispidus in New Mexico shows that both sexes have 12 cuticular ridges just posterior to the cephalic inflation, and in the posterior region of the body, females have 9 ridges of equal size while males possess 11 equal-sized ridges. In both sexes, the carene disappears at the posterior end of the body.

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