Page:The Olive Its Culture in Theory and Practice.djvu/100

 PLATE IX.—THE PHLOEOTRIBUS OLEAE.

Fig. 1. Portion of dry branch of olive A, B. a, excrescences formed by excrement and borings from wood of the year hanging from the openings of the galleries which the Phloeotribus dig out, at b, bb holes made going in. B to C bark stripped off, c, d, e, show galleries made by the Phloeotribus; c, gallery commenced showing niche enclosing eggs; d, two galleries dug by two females going in at same entrance flanked by laterals dug out by the larvæ; e, two similar galleries of which some complete laterals show the chrysalides, because formed by the larvæ which were the first to open it. Fig. 2. The galleries c, of previous figure enlarged; a, ingress; c, gallery in which female stays while excavating and depositing eggs; d, d, d, niches with larvæ enclosed who have commenced to dig out the lateral galleries; e, e, which contain the eggs; b, remains short and without laterals because dug out by a male. Fig. 3. Branch of olive in crotch of which is seen a Phloeotribus at work digging a tunnel; on pulling him out, the hole is seen filled with borings and excrement. Fig. 4. Branch similar to preceeding showing Phloeotribus (enlarged,) in a nest covered with borings and excrement. Fig. 5. The egg (enlarged.) Fig. 6. The larva side view (enlarged.) Fig. 7. Head of larva, seen from above, (much enlarged) Fig. 8. Same head, side view. Fig. 9. Chrysalis with strip of wood from tree a, adhering. Fig. 10. Insect (enlarged.) Fig. 11. Antenna, (very much enlarged.) Fig. 12. Tibia and tarsi of hind feet, (enlarged.)