Insect pests of farm, garden and orchard . ggs are laid in massesof a bright light-yellow color, from twenty to forty Ix-ing laid in amass on the under surface of the leaf, and hatch in about a caterpillars become full grown in from two to three weeks,so that the full life cycle may be passed in thii-ty days in mid-summer. It seems probable that at Washington, D. C, thereare three generations each year, and that the winter is passedin the pupal stage. Control.—The same means of control advocated for theimported cabbage worm will prove effective for this species. INJURIOUS TO CABBAGE A
Insect pests of farm, garden and orchard . ggs are laid in massesof a bright light-yellow color, from twenty to forty Ix-ing laid in amass on the under surface of the leaf, and hatch in about a caterpillars become full grown in from two to three weeks,so that the full life cycle may be passed in thii-ty days in mid-summer. It seems probable that at Washington, D. C, thereare three generations each year, and that the winter is passedin the pupal stage. Control.—The same means of control advocated for theimported cabbage worm will prove effective for this species. INJURIOUS TO CABBAGE AND CRUCIFEROUS CROPS 3(35 The Imported Cabbage Webworm * Sometime in the early 90s another cabbage pest was importedfrom Europe, where it is common in the Mediterranean region, andwas first noted as injurious in South CaroHna. Later it was foundin Georgia and Alabama, and it is probable that it has now becomemore generally distributed through the Gulf and South AtlanticStates. The imported cabbage webworm is about one-half an inch c Fig. 265.—The imported cabbage webworm {Hellula undalis Fab.): a, moth;b, larva side view; c, larva, back view; d, pupa—three times naturalsize. (After Chittenden, U. S. Dept. Agr.) of a grayish-yellow color, striped with five brownish-purple name is received from its habit of spinning a silken web,beneath which it retreats when not feeding, and to which massesof excreta and frass are attached. Cabbage and turnips havebeen most injured, but various other cruciferse are parent moth has a wing expanse of about five-eighths of aninch and the fore-wings are of a grayish color, mottled with brown,black and white as shown in the figure. * Helhda undalis Fab. Family Pyralidae. See F. H. Chittenden, Bulletin19, n. s., Div. Ent., U. S. Dept. Agr., p. 51; Bulletin 23, Ibid., p. 54; W. , Bulletin 1, Ga. State Board Entomology, p. 17. 366 INSECT PESTS OF FARM, GARDEN AND ORrilAHD Life Histori/. ~Thv life history has no
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