. Annual report of the North Carolina Agricultural Experiment Station. s of control. It is true that this is a difficultpest to fight, unless the gardener will study the habits of the worm,and learn how best to make use of corn as a trap crop, for there is nogood remedy except to pick them off by hand. Corn as a trap crop,unless properly managed so as to destroy the worms that attack it,may serve only to increase the numbers of this pest. Thorough spraying of tomato plants with Bordeaux-Paris greenmixture, usually used against flea beetles and the green tomato worm,may result in poisoning some
. Annual report of the North Carolina Agricultural Experiment Station. s of control. It is true that this is a difficultpest to fight, unless the gardener will study the habits of the worm,and learn how best to make use of corn as a trap crop, for there is nogood remedy except to pick them off by hand. Corn as a trap crop,unless properly managed so as to destroy the worms that attack it,may serve only to increase the numbers of this pest. Thorough spraying of tomato plants with Bordeaux-Paris greenmixture, usually used against flea beetles and the green tomato worm,may result in poisoning some of the fruit worms. This should notbe depended upon, however, for the worms eat only a small area of thesurface of tomatoes. SOME INSECT ENEMIES OF GARDEN CROPS. 59 Tomato Horn Worm (Phlegethontius celeus, Joh.). This conspicuous green worm is sometimes abundant enough tocause noticeable injury and occurs also on tobacco, and on that plantit is a very serious pest. This is the larvae of a large, narrow-wingedmoth, belonging to the family Sphingidce or Sphinx Fig. 38.—Tomata Horn Worm, Phlegethontius celeus: a, adult moth ; 6, full-grown larva; c, pupa—about two-thirds natural size. ( Howard, Farmers , U. S. Dept. of Agr.) DESCRIPTION. Larvce.—Full grown worms are from three to four inches long,dark green in color, with oblique V-shaped white lines on each sideof the body. The caudal end bears a prominent, long, sharp-curvedhorn that is quite characteristic. A closely related species of horn-worm, having straight white oblique lines on each side of the body isalmost equally common. Moths.—The moths have large, powerful wings, narrow comparedto their length, and a robust body. The wings are brownish gray ingeneral color with wavy markings and expand about four abdomen is marked on each side by five orange colored spots bor-dered with black. REMEDIES. Small fields of tomatoes, or especially a few garden plants, may beprotected by picking the worm
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