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PROCEEDINGS OF THE CALIFORNIA ACADEMY OF SCIENCES 
Series 4, Volume 65, Supplement I 
California and Nevada: Vaughan (1954) observed long-eared myotis at elevations ranging 
from 850 to 2,500 meters in the San Gabriel Mountains of southern California (down to 1,800 
meters on the inland desert slope) in habitats ranging from chaparral to ponderosa pine; at lower 
elevations they were seen foraging over water and among alders (Alnus sp.) and seep willow (Bac- 
charis sp.), whereas at higher elevations they were observed foraging about two meters above 
ground among trunks of conifers. Woodland habitats seemed most preferred (Vaughan, 1954). 
Relative abundance of individuals was low in mist net and night roost surveys along the upper 
Sacramento River of California, with 20 bats captured among 1,398 captures of 15 species in mon¬ 
tane hardwood and conifer habitats (Pierson et al., 1996b). Long-eared myotis also were low in rel¬ 
ative abundance (13 bats captured among 403 bats of 10 species) in mist-netting surveys in 
Whiskeytown National Recreation Area in Shasta County, California, where 47 sites between 256 
and 1,899 meters elevation were sampled in a variety of habitats, ranging from chaparral to Dou¬ 
glas fir forests (Duff and Morrell, 2007). This species ranked seventh among ten species in relative 
abundance (13 captures out of 284 individuals) in a mist-net survey both over water and within 
forests (concentrating on groves of giant sequoia trees, Sequoiadendron giganteum ) in Yosemite 
National Park in the California Sierra Nevada Range (Pierson et al., 2006). This species ranked 
eighth of 17 (12 individuals among 390 bats) captured in mist nets at 19 sites in the Sierra Nevada 
mountain range of California during 1993-1999 (Pierson et al., 2001). 
Long-eared myotis ranked eleventh in relative abundance (12 of about 2,000 bats) among 13 
species captured foraging in four vegetation zones (ranging from desert scrub to bristlecone-lim- 
ber pine forests) in the White and Inyo Mountains of Nevada and California, but they were only 
taken in lower drainages from Great Basin desert scrub through pinon-juniper habitats (Szewczak 
et al., 1998). They ranked eighth in relative abundance at the Nevada Test Site (56 among over 
2,000 bats of 13 species), where all individuals were netted in Great Basin Desert habitat (Hall, 
2000). This species ranked fifth (19 captures among 299 bats of 11 species) in mist-netting surveys 
over water in west-central Nevada in habitats categorized in four vegetation zones, but it was only 
taken in two, the pinon-juniper woodland and riparian deciduous zones (Kuenzi et al., 1999). 
Southwestern U.S.: This species is unknown from the lower arid regions of the southwest, 
including Texas and parts of Arizona and New Mexico, areas considered outside of the species dis¬ 
tributional l imi ts (Manning and Jones, 1989). This has been confirmed by some extensive surveys. 
None have been captured in major surveys in and near Big Bend National Park in southwestern 
Texas (Easterla, 1973; Yancey, 1997; Higginbotham and Ammerman, 2002), in predominantly arid 
habitats of northwestern Arizona (but including pine forest and elevations at 2,286 m; Cockrum et 
al., 1996), and in ponderosa pine forests at 1,350 to 1,930 meters elevation along the East Verde 
River below the Mogollon Rim, on the Tonto National Forest in central Arizona (Lutch, 1996). 
Arizona: Long-eared myotis ranked third in abundance among 15 species (269 bats captured 
among 1,673 individuals) netted over water in ponderosa pine and ponderosa pine-Gambel oak 
woodlands at 2,200 to 2,600 meters elevation on the Coconino Plateau of northern Arizona during 
1993-1995 (Morrell et al., 1999). Long-eared myotis ranked third in relative abundance (243 cap¬ 
tures among 1,441 individuals of 14 species) captured in combined low severity and high severity 
bum areas (two and three years post-fire) in ponderosa pine forest at 2,345 to 2,686 meters eleva¬ 
tion in the Apache-Sitgraves National Forests in east-central Arizona (Saunders, 2015). They 
ranked as least abundant among 17 species of bats (one captured of 1,171 total bats netted) taken 
over water mostly in ponderosa pine and pinon-juniper habitats of the Arizona Strip in northwest¬ 
ern Arizona (Herder, 1998). Absence of long-eared myotis in some surveys in Arizona (Cockrum 
et al., 1996; Lutch, 1996) is noted above. 
New Mexico: Long-eared myotis were commonly associated with pinon-juniper woodlands in 
