324 IXJf'RIOf'S INSECTS, WITH TREATMENT 



TreatnietU. — Make four applications of lime-sulfur (SS"^ Beau 

 m6), 1 gallon in 75 gallons of water, adding " Black-leaf 40 " 

 tobacco extract at the rate of 1 part in 1800 parts of the di- 

 lute lime-sulfur, as follows : — 

 First. — Just after most of the petals have fallen from the 



blossoms. 

 Second. — Ten or fourteen days after the first. 

 Third. — From three to four weeks after the second. 

 Fourth. — In August or September, to protect later growths of 

 foliage. (U. S. Bureau of Entomology.) 

 Parsley. Parsley- worm {Papilio asterias). — Larva, inch and a 

 half long, light yellow or greenish yellow with lines and spots ; 

 feeding upon leaves of parsley, celery, carrot, etc. When the 

 worm is disturl^cd it ejects two yellow horns, with an offensive odor, 

 from the anterior end. 



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

 times. Upon parsnip, arsenicals. 

 Parsnip. Parsley-worm. — See under Parsley, above. 



Par.snip Web- worm {Depressaria heradiana). — Larva, about a half 

 inch long, feeding in the flower cluster and causing it to become 

 contorted. 



Treatment. — Arsenicals, applied as soon as the j'oung worms 

 appear, and before the cluster becomes distorted. Burn the dis- 

 torted umbels. Destroy all wild carrots. 

 Pea. Pe.\-\\t:evil or Pe.\-bug {Bruchus pisi). — 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 gnjwing peas. 



Treatment — Hold over infested seed for one year before plant- 

 ing. Late planting in some localities. Fumigation with carbon 

 bisulfid. 

 Pea Aphls (Macrosiphum pisi). — A rather large green plant-louse, 

 often attacking peas in great numbers and causing enormous 

 losses. 



Treatment. — Rotation of crops. Early planting. When peas 

 are grown in rows, the brush-and-cultivator uK^thod may be used. 

 The plant-lice are brushed from the plants with pine boughs, and 

 a cultivator follows stirring the soil. This operation should be 



