PLATE 4. 



Fign. 1 & 2. Cecidomyia dustruotor (male and female). 



a. Segments of the abdomen. 



b, c. Antenna; magnified. 



d, e. The same, natural size. 



/. Profile view of the head, palpi, and origin of the antennae. 



g. Dorsal view of the worm. 



h. Of the flaxseed state. 



J. Ventral view of the same. 



j. Lateral ditto. 



k. Dorsal view of the dormant larva. " 



I. Ventral view of the pupa. , 



A, B. Wheatstalks infested with the insect. 



OT. Wheatstalk broken away, showing the young worms. 



3, 4. CEciDOMyiA ROBiNiA (pupa enlarged ). 5. Mouth. 



6. Larva. 7. Wing. 



