The community data files are bat abundance/absence matrices for the family Vespertilionidae and the genus Myotis. Community data for all bat taxa can be found at http://doi.org/10.5061/dryad.627ck. Communities were delimited in 6 ways: five km bufferes, ten km buffers, five km grids, ten km grids, fifty km circles, and one hundred km circles. Prefix Geographic area All Commuities from all deserts combined GB Communities from the Great Basin Desert MJ Communities from the Mojave Desert SN Communities from the Sonoran Desert CH Communities from the Chihuahuan Desert Suffix Taxonomic extent Vespertilionidae Communities composed of vespertilionids Myotis Communities composed of Myotis For all files, the following species abbreviations were used: FID = Identification number for each community; assigned by ArcGIS ANPA = Antrozous pallidus COME = Corynorhinus mexicanus COTO = Corynorhinus townsendii EPFU = Eptesicus fuscus EUMA = Euderma maculatum IDPH = Idionycteris phyllotis LANO = Lasionycteris noctivagans LABL = Lasiurus blossevillii LABO = Lasiurus borealis LACI = Lasiurus cinereus LAEG = Lasiurus ega LAIN = Lasiurus intermedius LASE = Lasiurus seminolus LAXA = Lasiurus xanthinus MYAU = Myotis auriculus MYCA = Myotis californicus MYCI = Myotis ciliolabrum MYEV = Myotis evotis MYFO = Myotis fortidens MYLU_AL = Myotis lucifugus alacensis MYLU_CA = Myotis lucifugus carissima MYLU_RE = Myotis lucifugus relictus MYME = Myotis melanorhinus MYMI = Myotis milleri MYNI = Myotis nigricans MYOC = Myotis occultus MYTH = Myotis thysanodes MYVE = Myotis velifer MYVI = Myotis vivesi MYVO = Myotis volans MYYU = Myotis yumanensis NYHU = Nycticeius humeralis PAHE = Parastrellus hesperus PESU = Perimyotis subflavus RHGR = Rhogeessa gracilis