Contarinia pyrivora
The inducer of this gall is unknown or undescribed.
Family: Cecidomyiidae | Genus: Contarinia
Hosts: Pyrus communis
Detachable: integral
Color: red, yellow, green
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Shape: globular
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Walls: thick
Location: bud, flower
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Our ID Notes may contain important tips necessary for distinguishing this gall from similar galls and/or important information about the taxonomic status of this gall inducer.
The plant-feeding gall midges of North America
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Enlarged, sterile fruitlet
Infested fruit grow more quickly than normal until about 1cm long at which time the yellowish, gregarious larvae inside are full-grown and drop to the ground.
This is an immigrant from Europe, first discovered in North America in 1877 on introduced stock in Connecticut.
Host: P. communis
Distr: widespread in northeastern United States and eastern Canada.
- Raymond J. Gagne: (1989) The plant-feeding gall midges of North America©
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