192 PESTS OF GARDEN AND FIELD CROPS 
will reveal the peculiar-looking eggs, like white barrels with dark 
hoops. 
The adults spend the cold weather in rubbish or other shelter, and 
become active very early in the spring, feeding first on wild mustard 
and other weeds of the same family. There are several generations in 
the South. In the fall the bugs feed until driven in by cold weather. 
The most important control measure is a thorough cleaning up early 
in the fall, as soon as the crops are harvested, combined with an early 
planting of trap crops in the spring, on which the bugs will congregate 
and where they may be destroyed by spraying with 25 per cent kerosene 
emulsion or with pure kerosene. Kale or mustard are good traps. 
After the bugs are on cabbages they cannot be killed by spraying 
without at the same time injuring the plants. 
The Tarnished Plant-bug (Lygus pratensis Linn.) 
Truck crops of all kinds are injured by a small, brownish, sucking 
bug. Both in its earlier stages and as a winged adult, it sucks the 
juices of the leaves or tender stems. 
The mature bug is about one fifth 
of an inch long, and somewhat 
obscurely marked with dull yellow 
and brown. 
The young nymphs may be 
killed with a contact insecticide 
such as 7 per cent kerosene emul- 
sion or tobacco extract. The 
winged adults are too active to 
make this treatment effective. 
Thorough cleaning up of all rub- 
Fic. 240. — The Tarnished Plant-bug. bish and crop remnants in the fall 
Enlarged and natural size. Orig- 
res is the only other means of con- 
trol. 
The False Chinch-bug (NVystus erice Sch. (angustatus Uhl.)) has 
similar habits. There are various other species that occasionally are 
troublesome. Control measures are the same. 
