INJURIOUS INSECTS. 35 



yellow horns with an offensive odor, from the anterior 

 end. 



Remedies. Hand-picking. Poultry are said to eat them 

 sometimes. Upon parsnip, arsenites. 

 Parsnip. PARSLEY- WORM. See under PARSLEY. 

 PARSNIP WEB- WORM (Depressaria heracliana, De Geer). 

 Larva, about a half inch long, feeding in the flower-cluster 

 and causing it to become contorted. 



Remedies. Arsenites, applied as soon as the young 

 worms appear, and before the cluster becomes distorted. 

 The worms are easily disturbed, and hand-picking is often 

 advisable. Burn the distorted umbels. 



Pea. PEA-WEEVIL or PEA-BUG (Bruchus Pisi, Linn.). A 

 small brown-black beetle, living in peas over winter. The 

 beetle escapes in fall and spring and lays its eggs in young 

 pea-pods, and the grubs live in the growing peas. 



Preventive. It is said that coal ashes or sand saturated 

 with phenyl and sown with the peas will prevent attack. 



Remedies. As soon as the mature peas are picked, and 

 while the grubs are only partly grown, subject the peas to 

 a temperature of 145 for an hour. The seed will not be 

 injured. The ripe peas may also be confined in some tight 

 receptacle, and a little bisulphide of carbon added. 

 Peach. APHIS {Aphis Persicce-niger, Smith). A small black 

 or brown plant-louse which attacks the tops and roots of 

 peach trees. When upon the roots it is a very serious 

 enemy, stunting the tree and perhaps killing it. Thrives 

 in sandy lands. 



Remedies. Kerosene emulsion. Tobacco decoction. To- 

 bacco hoed in about the tree will destroy the root-colonies. 

 APPLE-TREE (ROUND-HEADED) BORER. See under APPLE. 

 FLAT-HEADED BORER. See under APPLE. 

 FRUIT BARK-BEETLE. See PIN-HOLE BORER. 

 KATYDID. This insect is often troublesome to the peach in 

 the southern States in the early spring, eating the leaves 

 and girdling young stems. 

 Remedy. Poisoned baits placed about the tree. 



