Definitions

1. adjective

Relating to or denoting a suborder of flies that do not have a distinctive calyptra, typically a hood-like structure on the puparium.

“The study of acalyptrata flies is an important area of research in entomology.”

2. noun

A member of the suborder of flies that do not have a distinctive calyptra.

“The acalyptrata found in the region were identified as a new species.”