Species Not Located but Potentially Present on the Sioux District, Custer National Forest 



Northern Long-eared Bat (Myotis septentrionalis, formerly M. keenii septentrionalis) 



Description: Similar in appearance to M. lucifugus, but tips of guard hairs not so glossy. 



Ears, when pressed forward, extend beyond tip of nose (rare for M. lucifugus). Calcar 

 slightly keeled. Weighs 5-8 g. 



Distribution: Northeastern North America west to British Columbia, Alberta, and western 



North Dakota south to the southeastern United States. This species is locally common 

 in ponderosa pine habitat in the Black Hills (Turner 1974), using caves and old 

 buildings as summer roosts. Lactating females have been found in the Black Hills in 

 July and August; it may hibernate in the Black Hills. One record from Montana 

 (Swenson and Shanks 1979); a hibernating adult male was found on 12 January 1978 

 in an abandoned coal mine in northeastern Montana, 45 km WNW of Fort Buford, 

 North Dakota. 



Status: Not listed by any federal agency. 



Natural Heritage Program rank: G4; S2 in Montana, S3 in South Dakota. 



Red Bat (Lasiurus borealis) 



Description: Distinctive; dorsal pelage ranges from bright reddish orange to chestnut. Many 

 dorsal hairs tipped with white, giving a frosted appearance. Dorsal surface of the 

 uropatagium is well-furred. Ears are short, nearly naked, and rounded. Weighs 8-14 



g. 



Distribution: Southern Canada through the United States to northern South America. 



Resident in the Dakotas and Nebraska, but restricted in the western parts of these states 

 to urban areas and wooded riparian habitat; roosts in trees as solitary individuals or 

 small family groups. Migrates out of the region in the winter. In the Black Hills, a 

 yearling female was captured on 29 July 1968, and a lactating female was caught on 20 

 August 1968 (Turner 1974). A single specimen, collected in the 1860's, exists for 

 Montana, labeled "Yellowstone River"; the location could be in error. 



Status: Not listed by any federal agency 



Natural Heritage Program rank: G5; SR for Montana, not on Species of Special Concern list 

 for South Dakota. 



Spotted Bat (Euderma maculatum) 



Description: Distinctive; huge ears (45-50 mm long), each shoulder and the rump with a 

 large white patch surrounded by dark fur. Wings and tail membranes are naked and 

 pinkish-red. 



Distribution: Found in a wide range of habitats in the western mountain regions, most often in 

 rough and rocky, semi-arid and arid terrain, varying from ponderosa pine forest to 

 scrub country and open desert. Day roosts tend to be situated in high cliffs near 

 perennial water. Occurs in the Pryor Mountains around Bighorn Canyon, Carbon and 

 Big Horn Counties, south-central Montana (Worthington 1991); a single individual 

 was collected previously in Billings, Yellowstone County (Nicholson 1950). Although 



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