143 
X 51-153- The potato patch, and indeed the entire farm, should be 
kept free from weeds of the nightshade family, for the potato- 
beetle can breed on these. 
W'iREWORMS 
Liiiioniiis confusus Lee. 
But one kind of wireworm has been found by us common enough 
in Cook county to require special mention, but this single species is 
very injurious there to potatoes (Fig. 35, 36), radishes, onions, tur- 
nips, tomatoes, cabbage, corn, and horseradish. It burrows into or 
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F'a- 35- Potatoes showing injury by wireworms, Liiiiaiiiiis coii- 
fitsiis. 
devours the roots and tubers of these vegetables, thus often com- 
pletely ruining the crop. With the exception of the onion, tomatoes, 
cabbage, and corn, the plants above mentioned give no evidence 
above ground of the presence of wireworms, their attacks seldom 
weakening the plant, but merely disfiguring the marketable part. 
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F 
ig. 36. Wirewor 
Length abo 
m, Limonius confusus, 
ut three-fourths inch. 
larva. 1 
Fig. 2)7- Tip of larva, 
seen from above. 
Greatly magnified. 
