87a (86b).    Mouthparts consist of 1-2 (if 2 then parallel, not opposable) median, dark colored,

                   down curved mouth hooks [Cyclorrhapha maggots]............................................................ Diptera

 

 

87b.    Mandibles opposable, but at times reduced, without mouth hooks as described previously

           [Apocrita larvae].......................................................................................................................Hymenoptera