Definitions

1. adjective

relating to or located near the middle of the scutellum in insects, especially wasps and bees

“The mesoscutal plate is a characteristic feature of the wasp’s exoskeleton.”

2. noun

a part of an insect’s exoskeleton, specifically a plate in the scutellum

“The mesoscutal plates of the bee’s scutellum are fused together.”