The wasp lays its eggs into third instar larvae of the fly , which then develop after the larvae have pupated .
It is a parasitoid of Rhagoletis pomonella , the apple maggot .
The parasitoid lays parasitoid 's eggs into third instar larvae of the fly , which then develop after the larvae have pupated .
It is a parasitoid of Rhagoletis pomonella , the apple maggot .