| helminth parasites of unisexual and bisexual whiptail lizards (teiidae) in north america. v. mesocestoides sp. tetrathyridia (cestoidea: cyclophyllidea) from four species of cnemidophorus. | two hundred and one whiptail lizards, cnemidophorus spp., from texas and colorado (usa), were examined for mesocestoides sp. tetrathyridia. eleven (5%) were infected, including three of 58 (5%) c. dixoni, six of 70 (9%) c. gularis septemvittatus, one of 35 (3%) c. marmoratus, and one of 34 (3%) c. tesselatus; four c. inornatus heptagrammus were not infected. in addition, 41 non-cnemidophorine lizards from the same study area were not infected. free tetrathyridia were found in the body cavity of ... | 1991 | 1920673 |