Cephalic skeleton, typical for for the family Agromyzidae; in particular the anterior arm is simple, quite unlike in the Tephritidae or Drosophilidae.

Ophiomyia beckeri larvs: cephalic skeleton
Cephalic skeleton, typical for for the family Agromyzidae; in particular the anterior arm is simple, quite unlike in the Tephritidae or Drosophilidae.
Ophiomyia beckeri larvs: cephalic skeleton