Definitions

1. noun

A suborder of flies in the order Diptera, characterized by the absence of a distinct calyptra.

“The biologist specialized in the study of acalyptratae, a unique group of flies.”

2. adjective

Relating to or characteristic of the acalyptratae suborder.

“The acalyptratae flies were found in the nearby forest, their absence of a calyptra a notable feature.”