The word for snakelike is ophidian. The word for froglike is batrachian. Is there a word for batlike?
Yes, "chiropteran" ("hand-wingy"):
chiropteran: (adj) relating to or denoting bats.
Also, @Frank says the OED uses "cheiropteran" (eiro instead of iro).
You already have your answer:
This is a good choice because:
- it is a recognized word
- a reader will immediately understand your meaning