Fifth report of the United States Entomological Commission, being a revised and enlarged edition of Bulletin no7, on insects injurious to forest and shade trees . e caterpillar has an additional pairof prop-legs, though so short as to be useless. I find that most of thedamage is done by the caterpillars of vernata. On June 15, 1875, Icollected five hundred and fifty-seven caterpillars from the apple treesin my garden. Of these, five hundred and twenty were vernata, andtwenty-seven were the young of the autumn species. Peck, in his ac-count published in 1795, states that vernata does the princi
Fifth report of the United States Entomological Commission, being a revised and enlarged edition of Bulletin no7, on insects injurious to forest and shade trees . e caterpillar has an additional pairof prop-legs, though so short as to be useless. I find that most of thedamage is done by the caterpillars of vernata. On June 15, 1875, Icollected five hundred and fifty-seven caterpillars from the apple treesin my garden. Of these, five hundred and twenty were vernata, andtwenty-seven were the young of the autumn species. Peck, in his ac-count published in 1795, states that vernata does the principal damage.* Remedies.—The use of printers ink laid on tarred paper is the cheap-est, though the ink should be applied every day or two. The use of tintroughs of oil surrounding the tree is almost sure to stop the ascent ofthe females, while wooden troughs of oil built around the bottom of the *It is probably this species which I have found feeding on the leaves May 30 andJune 1, at Providence. It is a reddish-green obscurely striped larva, much like thecanker-worm in form and size, but a little stoutiBr. 232 FIFTH REPORT OF THE ENTOMOLOGICAL truuk are almost equally efficacious. Care and attention, and, above all,CO operation among those suffering from these worms, will enable us tocheck their ravages. 14. The elm spax-worm. Eugonia subsignaria (Hiibuci). Order Lepidoptera ; Family Hatching from the eggs as soon as the leaves unfold and living unobserved for aweek or two on young shoots in the tree tops, measuring or span worms, resemblingthe twigs of the elm in color, with a large red head, and the terminal ring of the bodybright red ; pupating towards the end of June, and during July and August trans-forming into a snow-white moth. This insect is widely spread. I haveobserved it in the forests of northernMaine in August, and it is common inthe Middle States. It is very destruc-tive to the elms in New York City,Brooklyn, and Philadelphia, though n
Size: 1810px × 1380px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1890, bookpublisherwashingtongovtprin
