The nematode, Abbreviata terrapenis (Physalopteridae) was found in 16 (6%) of 267 banded rock rattlesnakes (Crotalus lepidus klauberi) from Arizona and New Mexico. Abbreviata terrapenis in C. lepidus represents an accidental parasite in that “infection” was acquired by the ingestion of lizard prey. Feeding captive snakes on wild-caught lizards poses a risk of introducing nematodes to the snakes.

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