hymenopus coronata

Conrad Bérubé
island crop management
email: uc779(at)freenet.victoria.bc.ca

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Green Fruitworm

Information on this page is derived from public domain documents published by the federal government of canada, the provincial government of British Columbia and information contributed on electronic discussion groups. Please bear in mind that any pesticides mentioned in these pages may no longer be recommended or registered for the indicated use — check with your local pesticide officer or regional agrologist for current info (you can use the provincial directory on the internet to search for those job titles or call Enquiry bc at 1 800 663-7867 for assistance). It is recommended that you use a search engine using the common name and/or scientific name of the organism(s) below, together with the name of your province, to find biology and management information relevant to your local conditions.

If you choose to use chemical controls remember to
always follow pesticide label instructions!

insects of economic importance in Canada and British Columbia

species: lithophane antennata (walker
common names: green fruitworm

Green Fruitworm


Green Fruitworm    Green Fruitworm    Green Fruitworm

Apples with Green Fruitworm

Agriculture and Agri-Food Canada Insect Identification Sheet No. 45 March 1981

Green Fruitworm

Lithophane antennata (Walker)

The green fruitworm is an important pest of apples in Eastern Canada and British Columbia. Other fruit and deciduous forest trees are also occasionally attacked.


Damage to apple trees is usually first noted 3 to 4 weeks after petal fall. Newly hatched larvae feed on apple buds, switching to the fruit when it is large enough. The larvae somearial eat large holes which extend through the apples. Young fruit may be entirely consumed; more often, the apple continues to grow but shows deep scabby feeding areas that render them unmarketable.

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Life History:

Adults are dull grey moths with 4 cm wingspans. Green fruitworms overwinter as adults in sheltered sites. Early in the spring they emerge and fly to nearby orchards to mate and lay their eggs on the branches of apple trees. Larvae hatch prior to bloom and begin to feed on apple buds, switching to young apples as they appear. Larvae are pale green with white longitudinal stripes down their backs. At maturity they reach a length of 3 cm. In June the larvae crawl down the trees and burrow 3 cm into the soil. Here they transform into dark brown pupae inside thin silken cocoons. Adults emerge in September or October. A few may overwinter as pupae to emerge as adults the following spring. There is a single generation per year.

Pest Management:

Contact your provincial Department of Agriculture for control information.

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Copyright © 2007 Conrad Bérubé, site design, concept and scripting. All rights reserved worldwide.
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