. Annual report. 1st-12th, 1867-1878. Geology. 794 EEPORT UNITED STATES GEOLOGICAL SURVEY, a collar, the entire mass is covered over with a gummy secretion, which hardens, and serves as a protection to the eggs. Eemedies.—In the early spring as well as late autumn the bunches of eggs should be picked off and burned. When the tents are formed in Jane the nest should be removed with a mop dipped in oil or kerosene, at noon-time, when the caterpillars are in the tent. By discharging a gun close to the nest it can be destroyed with a small charge of powder. Plate LXIX, Fig. 7, represents the cater
. Annual report. 1st-12th, 1867-1878. Geology. 794 EEPORT UNITED STATES GEOLOGICAL SURVEY, a collar, the entire mass is covered over with a gummy secretion, which hardens, and serves as a protection to the eggs. Eemedies.—In the early spring as well as late autumn the bunches of eggs should be picked off and burned. When the tents are formed in Jane the nest should be removed with a mop dipped in oil or kerosene, at noon-time, when the caterpillars are in the tent. By discharging a gun close to the nest it can be destroyed with a small charge of powder. Plate LXIX, Fig. 7, represents the caterpillar of Glisiocam;ixh disstria Hiibner {sylvatica Harris), which rarely occurs on apple-trees, being more common on the oak. It is a light blue, with a dorsal rim of eleven white oval spots. The moth, with the eggs, is represented at Fig. 8. There are two species of Glisiocam/pa in California (G. californica Pack., and G. constrictu Stretch), and one is troublesome to apple-trees at Salt City, Mr, Barfort tells me, which may in time leave the oak on which it feeds and attack the apple. Both of the eastern tent-caterpillars orig- ua ly fed on the oak. The Fall Web-Worm, HypTiantria texior Harris. (Fig. 63.)-'FormiDg large webs on fruit and forest trees in August; a hairy, slender, greenish-yellow caterpillar dotted with black, changing to a supw-white unspotted moth. This common and annoying cat- erpillar is universally abundant, weaving its conspicuous web or tent- like structure on the branches of the apple, pear, and cherry, etc., in Au- gust, the worms remaining about until the leaves are nearly ready to fall. They usually eat the leaves on one entire branch and then pass to the next, tying the leaves to- gether with silken threads. They are easily exterminated by hand- Fig. (33.—Fall Web-Worm, a, larva; chrysalis; c, moth, (After Riley.) The Coddling Moth, Carpocapsa pomoneUa Linn. (Plate LXIX, Fig. 9.)—Eating holes in apples, causing them to fall prematur
Size: 2285px × 1094px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1860, bookpublishe, booksubjectgeology
