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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Influence of the trophic factor on the development of hairy caterpillars of the fall webworm Hyphantria cunea Drury. Larvae feed inside the tents until the late instars. Insect Biochemistry and Molecular Biology. The sex ratio is usually 1: About species of hardwood trees have been recorded as larval hosts. Informatore Fitopatologico, 36 2: Jarfas Hyphabtria Viola M, Hyphantrai pests for Europe. The moth is native to North Americaranging from Canada to Mexico.

Fall Webworm Moth Hyphantria cunea (Drury, ) | Butterflies and Moths of North America

If you need expert professional advice, contact your local extension office. EPPO Bulletin, 10 1.

Rapid defoliation of forest and fruit trees occurs. Zashchita i Karantin Rastenii, No. Cocoon of the fall webworm, Hyphantria cunea Drury. The adults are attractive satiny-white moths some-times with brown or jyphantria spots. Female dies following oviposition, never moving from the leaf.


They wander from the plant and search for a protected location to pupate.

Fall Webworm

Insects that feed on Trees and Shrubs 2nd edition. Diurnal rhythm in the hatching of larvae of the fall web worm moth Hyphantria cunea and its regulation by environmental factors.

This page was last modified Amelanchier canadensis ; Crataegus spp.

This page was last edited on 30 Decemberat The foregut and midgut hyphanria the fall webworm are alkaline, and Johnson and Felon found that the midgut pH ranged from 8. Sustained outbreaks may be related to excessive use of area-wide spraying for mosquitoes, which is detrimental to natural enemies of the fall webworm.

Case study on the evaluation of non-economic cunew after Hyphantria cunea’s invading China. The sterilant effect of diflubenzuron using the American white butterfly as an example. The distribution in this summary table is based on all the information available. Lateral view of a fifth instar larva of the fall webworm, Hyphantria cunea Drury.

Hyphantria cunea (mulberry moth)

At maturity, the larvae may reach one inch in length. On average, males live for about 8 days. Mature larvae are hairy and either have a lime green body with black spots or can have darker color, especially in the later instars. The facility of the larvae to withstand starvation for up to 2 weeks means that they can easily be transported on vehicles to different areas and survive to initiate new infestations.


In Romania, it was demonstrated that, although H. One generation per year emerges in byphantria northern part of North Hyphzntriawith larvae appearing in late summer through early fall.

Fall webworm

For instance, larvae of the red-headed morph stay inside the tent throughout the larval stage, while the black-headed morph leaves the tent in its fifth instar.

Range all of United States and southern Canada plus northern Mexico accidentally introduced from North America to Yugoslavia in the s, and has since spread throughout Europe; later introduced to northern China and North Korea Habitat Weblike tents in branch tips where clusters of caterpillars strip foliage by contrast, eastern tent caterpillar nests are built in tree crotches adults are nocturnal and attracted to light Season Adults fly from May to July in the north; March to August in the south or all year in Florida Caterpillars are found June to September or October in the north; May to October in the south.

Arctiidae in the Guilan province.

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