This is one of a pair of structures in the fly larva that grow and develop into the eyes and antennae of the adult fly.
(This; is; one of a pair of structures in the fly larva) (the fly larva; grow; ) (the fly larva; develop; into the eyes and antennae of the adult fly)
This the fly larva the fly larva
is grow develop
one of a pair of structures in the fly larva
into the eyes and antennae of the adult fly