Hyphantria cunea Drury. The fall webworm is a widely distributed native pest of shade trees and shrubs and appears from late summer through early fall. It feeds . In Europe, where H. cunea has been introduced, larvae are rapid defoliators of forest and fruit tree species. In eastern Europe, mulberry and the. Common Names. fall webworm. Compiled by Whitney Cranshaw, Colorado State University: Hyphantria cunea (Drury) Lepidoptera: Arctiidae.
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Female dies following oviposition, never moving from the leaf.
Caterpillars of Hyphanteia North America 1. Diapause is facultative and depends on climate. There are many predators of the fall webworm, such as Monomorium minimumVespula spp.
Symptoms Top of page Woven silk nests enclosing a number of leaves are conspicuous Morris, The body is covered with tufts of long, silky, gray hairs arising from black and orange tubercles.
Cercis canadensis ; Gleditsia triacanthos ; Gymnocladus dioica ; Robinia pseudo-acacia ; Trifolium spp. Mexican for the biological control of the fall webworm, Hyphantria cunea Lepidoptera: Part of Hyphanea cunea’s success as a species can be attributed to the fact that its larvae are consummate generalists, capable of developing on a wide hypantria of host plants.
As the caterpillars grow, they continue to build tents which may reach several feet in diameter by late summer.
The fall webworm has a large number of host plants around the world.
Caterpillars are about one inch long when mature. Synthetic pyrethroids in the control of the American white butterfly.
Fall webworm is attacked by a great many natural enemies including tachinid flies, parasitic wasps and various hunting wasps. Insect Biochemistry and Molecular Biology.
Webs are progressively enlarged and much messier looking than those of tent caterpillars which occur only in spring and have shorter hairs and very little yellow on their bodies ; also, webs from the fall webworm are concentrated to the tips of the branches, whereas the tent caterpillar webs are largely found in hyphantrai unions.
Moth Photographers Group – Hyphantria cunea –
Detection and Inspection Top of page The sex pheromone obtained from female H. An adult parasitoid unidentified hyphqntria of the fall webworm, Hyphantria cunea Drury. Pupae of the fall webworm, Hyphantria cunea Druryremoved from a cocoon. Mating behaviour of fall webworms and attraction of male moths to trap baited with virgin females.
Hyphantria cunea Drury Usually there are eggs in a batch. One generation per year emerges in the northern part of North Americawith larvae appearing in late summer through early fall. Use of life table to evaluate control of the fall webworm by the parasitoid Chouioia cunea Hymenoptera: For more information, see Chalcote and GentryYaroshenkoBoehm A World List Lepidoptera: CAB International, pp.
Canadian Entomologist, 8: There are two forms, hyphantfia with red heads and those with black heads. Copulation occurs only once a day, for a few minutes, before sunrise. The bases of the front legs are orange or bright yellow.
Fall webworm – Wikipedia
Generate a print friendly version containing only the sections you need. EPPO, ; Yang et al. In Italy, where mulberry is the preferred host of H. Contributors own the copyright to and are solely responsible for contributed content.
Eggs are laid in masses on the leaves. Pupation occurs in thin cocoons. If trees are to be sprayed, treatments hyphantrria best applied when tents are small, particularly if an insecticide is used that must be eaten, such as Bacillus thuringiensis.
Entomological Knowledge, 40 1: Third instar larvae of the fall webworm, Hyphantria cunea Druryfeeding. In the wild, within its native range, fall webworm does not usually damage the trees, since the defoliation occurs just hyphwntria leaf drop.