THE OLIVE INSECTS OF CALIFORNIA 



61 



stroyed the infested trees and apparently ex erminated the insect. 11 

 Where found it is a pest of little importance. 



5.. The scale, Filippia oleae (Costa). A soft scale infesting the 

 olive leaves in southern Europe, but not nearly so serious as the black 

 scale, Saissctia oleae (Bern.) in the same localities, because it produces 

 little honej'dew and causes practically no smutting. 



Fig. 16. The olive white fly, Aleyrodcs olivinus Silvestri. a, adult; b, nymph; 

 c, row of eggs. (Redrawn from Silvestri.) 



Fig. 17 



Fig .18 



Fig. 17. Adult of the bark-beetle, Hylesinus oleiperda (Fab.). (Redrawn from 



Barbey.) 



Fig. 18. The olive leaf -miner, Perrisia oleae Angelini. Larva and the mines on 

 an olive leaf. (Redrawn from Del Guercio.) 



6. The terrapin scale, Lecanium nigrofasciatum Pergrande, was 

 reported by Pergrande as occurring on olive in Florida. 12 



7. Leucaspis riccae (Targ.). A scale insect commonly attacking 

 olive trees in southern Europe and northern Africa, but of little 

 consequence as a pest. 



8. The rufous scale, Sele-naspidis articulatus (Morgan). A scale 

 occurring in southern Africa, West Indies and at Key West, Florida. 



11 4th Bien. Rept. Cal. Bd. Hort., p. 438, 1894, and 5th Bien. Rept. Cal. Bd. 

 Hort., p. 43, 1916. 



12 Bull. 18, N.S., U. S. Dept. Agr., Bur. Ent., p. 26, 1898. 



