With a wingspan of 310-360 mm, the Ognev's serotine is slightly smaller than E. serotinus. Its dorsal fur is pale grey, which contrasts with the black face and ears. The species occurs in semi-arid habitats as well as lowland farmland and it roosts in natural crevices, ruins and buildings.
E. ognevi was recorded from Iraq, Iran and the southern Caucasus states. The species range also includes central Asia, India, northwestern China and possibly Mongolia.
No major threats present except the decreasing number of ruins and increasing disturbance by tourists.