. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. METHODS EMPLOYED AGAINST GIPSY MOTH. 19 PRUNING. As the female moths deposit their egg ckisters under loose bark and in holes and cavities in the trees, and also because the larvae seek such hiding places, it became necessary to rid the trees of* these natural shelters. To accomplish this purpose a considerable amount of pruning and filling of cavities was rec{uired. This work had to be skillfully done, especially when fruit or shade trees in cities or towns were treated. Many ingenious methods were devised for c
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. METHODS EMPLOYED AGAINST GIPSY MOTH. 19 PRUNING. As the female moths deposit their egg ckisters under loose bark and in holes and cavities in the trees, and also because the larvae seek such hiding places, it became necessary to rid the trees of* these natural shelters. To accomplish this purpose a considerable amount of pruning and filling of cavities was rec{uired. This work had to be skillfully done, especially when fruit or shade trees in cities or towns were treated. Many ingenious methods were devised for carrying on these operations, some of which have been adopted by profes- sional foresters and others who have taken up the business of caring for trees. TREATING EGG CLUSTERS. The insect exists in the egg stage nearly nine months in the year and many experiments were tried to determine the most ef- fective method of treating egg clusters. The first method used was that followed in Europe and consisted simply in scraping off the egg masses and burning them. In removing the eggs many were scattered, even if the work was carefully done, and as such eggs hatched in due time it became necessary to secure a better method of treatment. It was found that they could be killed by saturating the clusters with crude coal-tar creosote to which was added a small amount of either coal tar or lampblack to discolor them and enable the workmen to tell instantly the ones that had been treated. (See fig. 3.) It was necessary to make a very thorough search of all objects likely to harbor egg clusters if satisfactory results were expected, and this required much climbing of high trees as well as careful ground work. The pupae and moths were crushed or treated with creosote when found by the workmen. It was necessary to apply a combination of methods to secure satisfactory results and man}^ localities had to receive special treat-. FiG. 3.—Trunk of pine tree, showing tanglefoot band and egg clusters
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