Insect used for microbioassay studies is

Insect used for micro bioassay studies is Housefly maggots and Mosquitoes.
A bioassay is an analytical method to determine the concentration or potency of a substance by its effect on living animals or plants (in vivo), or on living cells or tissues (in vitro).
Microbiological assay helps in estimating active constituents, and biological activity and in monitoring the stability of antibiotics.