It seems more like some kind of trilobite or horseshoe crab than a moth or bat. Neither moths nor bats have such a thick, spiny exoskeleton.
What kind of bat is it based on? Common pipistrelles have toes and no thumb-toes, while this one appears to have thumb-toes like the hairy-legged vampire bat.
Aside from these peculiarities of design, which illustrate how this is not a perfect fusion of moths and bats but rather some creature with a few moth and bat aspects, it is excellent. It is amazingly detailed and exquisitely shaded.