 The dental formula of "Myotis thysanodes" is .The diet of the fringed myotis consists mainly of beetles (60 to 73%) and other flying insects, mainly moths (36-40%), which appear later in the evening, as well as arachnids and orthopterans.Additionally, it has been suggested that the wire-like hairs along its interfemoral membrane act to help trap the insects it catches in flight.