GASTROINTESTINAL HELMINTHS FROM THE ENDANGERED HUALAPAI VOLE, MICROTUS-MOGOLLONENSIS-HUALPAIENSIS (RODENTIA, CRICETIDAE)

The Hualapai vole (Microtus mogollonensis hualpaiensis) is an endanger ed rodent occurring in northwestern Arizona. Helminths were examined f rom 47 voles collected from 9 localities in northwestern Arizona. A to tal of 375 helminths was collected, including 2 species of cestodes AN oplocephaloides troeschi and Paranoplocephala macrocephala, and 1 ceca l nematode Syphacia obvelata. Pinworms were the most common helminth, but prevalence and abundance varied among localities. Comparison of th e pinworms we found with the types of S. obvelata and Syphacia nigeria na indicate that those in M. m. hualpaiensis were S. obvelata.