Page:The Olive Its Culture in Theory and Practice.djvu/158

 PLATE XIV.—DACUS OLEÆ. THE OLIVE FLY.

Fig. 1. Branch with fly in act of depositing egg at (a), (bb) showing spots where eggs have been deposited, (c. d.) showing gallery cut by the larvæ with purple lines. Fig. 2. Piece of pulp increased in size, a, a, wound made by boring, b, b, corresponding to cavity which contains the egg. Fig. 3. Same with the skin raised to show the cavity containing the egg at c. Fig. 4. Green olive showing larvæ. Fig. 5. Mature olive with transparent lines showing gallery. Fig. 6. Same open showing larva. Fig. 7. Same open showing chrysalis. Fig. 8. Same open showing hole of exit of larva. Fig. 9. Egg (enlarged.) Fig. 10. Larva enlarged, 10 a, two first rings with claws, side view, (enlarged), 10b, Papilla at the base of which opens the anterior extremity of tracheal canal. Fig. 11. Chrysalis (enlarged), 11a, the first ring still more enlarged, 11b, (the last ring enlarged.) Fig. 12. Female insect, (enlarged) 12a, antenna side view, (enlarged) 12b, borer, (enlarged.)