vocal analyses (Table 2; see also Hendricks 1997), include Western Small-footed Myotis (M 

 ciliolabrum), Western Long-eared Myotis, Big Brown Bat (Eptesicus fuscus), Townsend's Big- 

 eared Bat {Corynorhinus townsendii), Silver-haired Bat {Lasionycteris noctivagans), and Hoary 

 Bat (Lasiurus cinereus). The latter two species rarely associate with mines or caves (van Zyll de 

 Jong 1985, Nagorsen and Brigham 1993, Harvey et al. 1999). Other species not reported 



Table 2. Non-specimen records of bats from Granite County, Montana. 



in Granite County, but that may occur there include California Myotis (M californicus), Yuma 

 Myotis (M yumanensis), and Fringed Myotis (M thysanodes). Specimens of each species have 

 been collected to the west in adjacent Ravalli County (Hoffmann et al. 1969). 



Of the documented species in Granite County, Western Small-footed Myotis, Western 

 Long-eared Myotis, Long-legged Myotis, and Townsend's Big-eared Bat are U.S. Fish and 

 Wildlife Service "species of concern" (Harvey et al. 1999), former category 2 candidates for 

 listing under the Endangered Species Act Each species has been reported using mines and caves 

 elsewhere in Montana (Swenson 1970, Swenson and Shanks 1979, Hendricks et al. 1996, 

 Hendricks et al. 1999, Hendricks et al. 2000). Of the potentially occurring species documented 

 in adjacent Ravalli County, the Fringed Myotis and Yuma Myotis are also USFWS "species of 

 concern". 



10 



