unid Myotis (Myotis sp.)

I have not been able to ID these, beyond a tentative ID to the genus Myotis.  Any suggestions to ID would be appreciated.


ARIZONA: Cochise Co; Muleshoe Ranch Preserve, Bass Canyon - September 2013


TEXAS: Brewster Co; on TX 118, near Elephant Mt - July 2008


TEXAS: Jim Hogg Co; SW of Hebronville - March 2008