. Insect pests of farm, garden and orchard . e the vines have been regularly sprayed but little troublewill be had with them. Where they suddenly appear in large-swarms in gardens or on truck land, they are often destroyed bya line of men and children slowly driving them with branches, asthe beetles move but slowly. If a ditch is available it may beoiled, and the beetles destroyed like grasshoppers (page 108), orthey may be driven into a windrow of straw, hay, or any inflam-mable rubbish and burned in it. INSECTS INJURIOUS TO POTATOES AND TOMATOES 303 Three-lined Leaf-bee tie * Closely related
. Insect pests of farm, garden and orchard . e the vines have been regularly sprayed but little troublewill be had with them. Where they suddenly appear in large-swarms in gardens or on truck land, they are often destroyed bya line of men and children slowly driving them with branches, asthe beetles move but slowly. If a ditch is available it may beoiled, and the beetles destroyed like grasshoppers (page 108), orthey may be driven into a windrow of straw, hay, or any inflam-mable rubbish and burned in it. INSECTS INJURIOUS TO POTATOES AND TOMATOES 303 Three-lined Leaf-bee tie * Closely related to the Colorado potato-beetle, and verysimilar to it in habits, is the Three-lined Leaf-beetle. The eggsmay be distinguished by the fact that they are usually laid inrows along the midrib on the under side of the leaf, while thoseof the potato-beetle are laid indiscriminately in bunches. Thelarvie, however, may be readily distinguished from all otherinsects attacking the potato by being covered with a disgustingmass of their own Fig. 220.—Three-lined leaf-beetle (Lenia trilineata Oliv.); a, larva; b, pupa;d, eggs; beetle at right. (After Riley.) There are two l)roods during the season, the larvse of the firstappearing in June, and that of the second in August; but thebeetles of the second brood do not emerge until the followingspring. In other respects the life history is practically the sameas that of the Colorado potato-beetle. The beetle is of a paleyellow color, with three black stripes on its back, and in a generalway resembles the common striped cucumber-beetle (Diabroticarittata Fal).), though it is somewhat larger and the thorax isdecidedly constricted. In case it becomes necessary to destroy the blister-beetles, boththey and the three-lined leaf-beetle may be readily disposed of byapplying Paris green or other arsenite as advised for the Coloradopotato-beetle. * Lema trilineata Oliv. Family Chrysomelidce. 304 INSECT PESTS OF FARM, GARDEN AND ORCHARD Toma
Size: 2205px × 1134px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishernewyo, bookyear1915
