INJURIOUS INSECTS. 35 



yellow horns with an offensive odor, from the anterior 

 end. 



Bemedies. — 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. 



Bemedies. — 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. 



Bemedies. — 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 PersiccB-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. 



Bemedies. — Kerosene emulsion. Tobacco decoction. To- 

 bacco hoed ill about the tree w^ill 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. 

 Bemedy. — Poisoned baits placed about the tree. 



