. Elementary entomology. Insects. 2O2 ELEMENTARY ENTOMOLOGY. species of moths of this family, be- longing to several genera. The army-worm (Leucania unipunctd) is another caterpillar which or- dinarily feeds unnoticed on rank grasses, but occasionally becomes very numerous and advances in armies, destroying all crops in its line of march. The fall army-worm (Laphygma frugiperdd) has very similar habits, but is more common in the South and West. Two FIG. 317. The dark-sided cutworm (Agrotis messoriii] (After Riley) of the most serious cotton pests are the leaf worm (Alctia argillacid) and the b
. Elementary entomology. Insects. 2O2 ELEMENTARY ENTOMOLOGY. species of moths of this family, be- longing to several genera. The army-worm (Leucania unipunctd) is another caterpillar which or- dinarily feeds unnoticed on rank grasses, but occasionally becomes very numerous and advances in armies, destroying all crops in its line of march. The fall army-worm (Laphygma frugiperdd) has very similar habits, but is more common in the South and West. Two FIG. 317. The dark-sided cutworm (Agrotis messoriii] (After Riley) of the most serious cotton pests are the leaf worm (Alctia argillacid) and the bollworm (Heliothis obso- letd], although the latter also attacks the ears of corn, tobacco, and green tomatoes throughout the Middle States. A common pest of cabbage and lettuce is the cabbage looper (A u- tographa brassicae), a bright green worm with whitish lines, which bores into cabbages much like the common caterpillars of the cab- bage butterfly. It is known as a looper on account of the way in which it 'humps" along, much like a measuring worm, be- cause two pairs of the usual abdominal prolegs are lacking. FIG. 318. The cabbage looper ~ r , Some of the larger a, male moth ; l>, egg shown from above and from side; . r i • r 'i c, full-grown larva in natural position, feeding ; </, pupa in SpCClCS < LillS lamiiy, cocoon, a, , more with a win0" expanse enlarged. (After Howard and Chittenden, United States Department of Agriculture) of from tWO tO three. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Sanderson, Dwight, 1878-1944; Jackson, C. F. (Cicero Floyd), b. 1882. Boston, New York [etc. ] Ginn and Company
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