. An annotated list of the important North American forest insects. Forest insects. 8 tertiaiy parasite. Habrocytus thyridojpterigis Ashm. (fig. 11) is assumed to be a tertiary parasite on Allocota tliyridoptei'igis Rile}', when the latter is a secondary parasite of the tussock moth, but may be secondary when breeding in the cases of the bagworm. Fig. 10.—Dibrachys boucheamis: Adult female and antenna of male. Much enlarged (from Howard). When the bagworm occurs upon deciduous trees it can be controlled by hand-picking the bags in the winter, but when it affects evergreen trees it i
. An annotated list of the important North American forest insects. Forest insects. 8 tertiaiy parasite. Habrocytus thyridojpterigis Ashm. (fig. 11) is assumed to be a tertiary parasite on Allocota tliyridoptei'igis Rile}', when the latter is a secondary parasite of the tussock moth, but may be secondary when breeding in the cases of the bagworm. Fig. 10.—Dibrachys boucheamis: Adult female and antenna of male. Much enlarged (from Howard). When the bagworm occurs upon deciduous trees it can be controlled by hand-picking the bags in the winter, but when it affects evergreen trees it is practi- call}" impossible to apply this remedy with profit unless the plants are badly defoliated. There- fore for the treat- ment of evergreens spraying is a neces- sity. The methods of controlling shade- tree pests in cities and towns, as out- lined in Farmers' Bulletin No. 99,*^ on pages 25-29, are in part applicable to this species. This bulletin should be read by persons who have experienced trouble from the depredations of the bagworm. Collecting the hags. — -?• One of the most important remedies consists in gath- ering the bags with the contained insect by hand and either burning them or preserving them to lib- erate the useful parasites which have been previ- ously mentioned. This work may be facilitated by the use of a 12-foot pole pruner or similar appliance, and can be intrusted to those ordinarily unemployed, such as children and aged persons. Where the trees are ver}" tall it will be necessary to use a long ladder. For best results the cooperation of neighbors who are troubled with the same pest should be secured. a This publication may be had gratis on application to the Department of Agriculture. [Cir. 97]. 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 Craighead, Frank C. (
Size: 2001px × 1249px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorhopkinsadandrewdelmar, bookcentury1900, bookdecade1900
