. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 60 Slimmer. The maggots commonly enter at the center of the crown of the radish and, after burrowing about until full-fed, make their exits at the side. The accompanying illustrations (figs. 4 and 5), by Miss Miriam Palmer, show the injuries of the maggot to a radish in cross and vertical sections. The destructive pea aphis {Nectarophora pisl Kalt.) was sent me last fall by Mr. J. H. Empson, of the Empson Packing Company, Longmont, Colo. The lice were noticed in a few fields only, and they seemed to be entirely d
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 60 Slimmer. The maggots commonly enter at the center of the crown of the radish and, after burrowing about until full-fed, make their exits at the side. The accompanying illustrations (figs. 4 and 5), by Miss Miriam Palmer, show the injuries of the maggot to a radish in cross and vertical sections. The destructive pea aphis {Nectarophora pisl Kalt.) was sent me last fall by Mr. J. H. Empson, of the Empson Packing Company, Longmont, Colo. The lice were noticed in a few fields only, and they seemed to be entirely destroyed by their enemies before the season closed. It is my first record of this insect in Colorado. We shall doubtless hear more from it later. The melon aphis {Aphis gossypii Glover) is troublesome every year in the melon-growing districts, especially about Rockyford. The growers are fighting the louse by covering the vines Avith dirt as soon as they find lice upon them. ENEMIES TO FARM CROPS. The sugar-beet webworm {Loxostege sticti- calis Linn.) has been a very abundant moth at electric lights in northern Colorado for years, but this year was the first that it has done ex- tensive injury to sugar beets. It did some in- jury in a few limited localities in 1903, but not enough to occasion much alarm. This year a mid- summer brood, the "first week in July, did consider- able injury to beets about Hockyford, and a later brood was more destruc- tive about Rockyford, Sugar City, and Lamar from the 10th to the 20th of September. The first brood did no perceptible harm in northern Colorado, but the September brood caused thousands of dollars of loss in beet fields about Fort Collins, Greeley, and Sterling. Hun- dreds of acres of beets during September had all their leaves eaten away except the midribs and a little cluster of new leaves at the center. A\lierever the injuries became severe the larva? matured rapidly. A farmer might think his beets all right on Monday, and by We
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