10. Bark swollen and gnarled at or just below ground line 
Lepidoptera, Phycitidae 
pouthern: States he... we Homoptera, Fulgoridae 
Northern States .......... ncaa Hymenoptera, Formicidae 
11. Northern, Southern, and Lake States 
Coleoptera, Curculionidae 
More southern and western States and Lake States 
Orthoptera, Acrididae 
DIVISION II 
INSECTS INJURIOUS TO LARGE LIVING TREES AND TO 
SMALL TREES MORE THAN 4 OR 5 FEET TALL 
This group includes insects and related organisms which com- 
monly attack living forest and shade trees other than those that 
attack fruit and seeds or that attack small plants not more than 
4 or 5 years old. Insects responsible for damage to wood products, 
many of which primarily inhabit dead or dying trees or which 
attack logs, lumber, and other wood products are discussed under 
Division ITI. 
Injury consisting of discolored, yellowish, rusty, or mottled 
foliage covered with fine cobweblike threads or matting 
Tetranychidae A 
Injury consisting of defoliation, leaf rolling, leaf tying, leaf 
and petiole mining, or bast or epidermis miners on green- 
barked ‘Stems. oes a eo es B 
Injury occurring on new growth, twigs, branches, or small 
trees, consisting of mining, pruning, withering, or flagging OC 
Injury caused by larvae or beetles boring in the bark, under 
the bark, orci the wood" 2.9 fee ee eee D 
Injury consisting of a gall or swelling on stem, branch, or 
11-5) aaa aemnnrTOne Ss muUnnUTNS Son oh ERD Sinemmact GV NA Mer CCT NAT iy ec E 
Injury caused by sucking insects feeding on leaves, twigs, or 
bark surfaces, usually the softer tissues of the plant ............. F 
B. Defoliation and Other Injury 
1. injury esrused-by beetles’ sc.) nn tk hoe Ce eee 2 
Injury*caused-by larvae. 8 ee Gea ee eee 4 
Injury caused by other forms or insect not present ....... wrID 
2. Adults and larvae associated on the leaves 
Coleoptera, Chrysomelidae 
Adults’ only’ present... ee ee eee 3 
3. Beetles usually found feeding at night 
Coleoptera, Scarabaeidae 
Small, bright-colored, jumping beetles, Flea beetles, 
Coleoptera, Chrysomelidae 
Dull black, purplish, or gray, soft-bodied beetles, Blister 
Weetles i set OEE oy A ee Coleoptera, Meloidae 
Small snout beetles _..... Coleoptera, Curculionidae 
32 
