. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 68 One of the best forms of bait to be used consists of slices of potatoes or other vegetables poisoned in the same manner as advised in the consideration of cutworms. MISCELLANEOUS ROOT-INFESTING INSECTS. In addition to white grubs, wireworms, and root-lice, which have been treated as invading- the underground portion of beets, a few other species are found at the roots. Prominent among such are the seed-corn maggot and the clover-root mealj-bug. A number of com- plaints have been made of injury by insects which
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 68 One of the best forms of bait to be used consists of slices of potatoes or other vegetables poisoned in the same manner as advised in the consideration of cutworms. MISCELLANEOUS ROOT-INFESTING INSECTS. In addition to white grubs, wireworms, and root-lice, which have been treated as invading- the underground portion of beets, a few other species are found at the roots. Prominent among such are the seed-corn maggot and the clover-root mealj-bug. A number of com- plaints have been made of injury by insects which lead to the belief that the seed-corn maggot is frequently found on beets, although instances which could be positively traced to this species are com- paratively few. THE CLOVER-ROOT MEALY-BUG. {I)achiloj)ii(.s trifoUl )" This species, as its common name indicates, is better known as an enemy of clover, on the roots of which it feeds. In 1901, however, it appeared in considerable numbers on sugar beet in Michigan, the smaller stunted roots being invariably infested. Injiay was most apparent in June. The female mealy-bug- measures a little more than one-twelfth of an inch in length, is reddish brown, and covered Avith a waxy or meal}' secretion. The legs are dirty yellow, and from the sides project in the manner usual to this group 15 to 17 wax}' fila- FiG. GX-Dadiiioiyius citri: ft- meuts, the shortcst being near the head and male—enlarged (Division of , ji , -i ,• ^i • i Entomology). the lougcst near the tail, sometimes one-third as long as the body. It is related to the scale insects and is of similar appearance to the species shown in figure 63. Remedies.—The same methods of control that have been prescribed for root-lice would operate against the present species, with about the same results. THE SEED-CORN MAGGOT. (Pegnmya fusciceps Zett.) ^ Beet roots are subject to attack })y the above-named species of root maggot. During November of 1902 we received
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