410 



FOREST ENTOMOLOGY. 



Name of tree or 

 shrub affected. 



Name of insect. 



Oak 



(evergreen) 



Aphilothrix q uadrilin- 

 eata. 

 ii albopunctata 



Andricus ramuli . 

 Aphilothrix /ecu ndatrix 

 Dryophanta Scutellaria . 



ii longiventris 



ii divisa 



Biorhiza aptera 



Teras terminalis . 



Biorhiza renum 

 Cynips Kollari 



Aspidiotus zonatus 



Asterolecanium vario- 

 losum. 



Cossus ligniperda . 



Orgyia antiqua 

 Pygcera bucephala 



Tortrix viridana . 



L ith ocolletis messan iella 



Nature of injuries. 



Page. 



Produces small, ovoid, 

 ribbed galls on flowers. 



Produces ovoid, green, 

 smooth, hard galls in 

 buds. 



Produces gall like a ball 

 of cotton on flowers. 



Produces gall wholly en- 

 veloped in leaf scales. 



Produces cherry-like gall 

 on under surface of 

 leaf. 



Produces a hard, reddish, 

 striped gall on under 

 surface of leaf. 



Produces small, hard galls 

 on under surface of 

 leaf. 



Produces irregular clus- 

 ters of galls on roots 

 of old trees. 



Produces large, soft, 

 apple-like galls on ter- 

 minal or lateral buds 

 or terminal shoots. 



Produces kidney -shaped 

 galls on veins of leaf. 



Produces marble - like 

 galls on twigs of young 

 trees. 



Circular brown scales of 216 

 female on stems and 

 small scales of male on 

 leaves. 



Scales produce pitted de- 

 pressions on extreme 

 twigs. 



Larvte burrow in stems 245 

 of old trees. 



Larvte eat foliage . . 248 



Larvoe live gregariously, 251 

 and often defoliate 

 isolated branches or 

 whole trees. 



Larvre often defoliate 26( 

 trees in early summer. 



Larva lives within a 

 "blotch," generally on 

 under side of leaf. 



