ORDER DIPTERA 



233 



Fig 70 Phryngeal skeletons and mouth hooks of Dipterous leaf -mining 

 larvae.' *, Pegomyia calyptrata, first instar; *, 4, same, third instar; S 

 same, second instar; 5, Pegomyia vanduzeei, first instar; 6 P°^ tn p h ^ks n 

 same 7, second instar; 8, third instar; 9, Acidia heraclei; 10, Pegomyia 

 hyoscyami, first instar; 11, mouth hooks in same; 12 Hylemyia fugax, 

 IS. Pegomyia hyoscyami f second instar; 14, same, third instar. 



