Apple Maggot Fly vs Gray Hairstreak

Side-by-side species comparison

Attribute Apple Maggot Fly Gray Hairstreak
Scientific Name Rhagoletis pomonella Strymon melinus
Order Diptera Lepidoptera
Family Tephritidae Lycaenidae
Size 4-6 mm 22-35 mm wingspan
Habitat Orchards Grasslands
Diet Fruit Feeders Fruit Feeders
Regions Eastern North America Throughout the United States, southern Canada, and into Central America
Conservation Least Concern Least Concern

Apple Maggot Fly

A fruit fly pest whose larvae tunnel through apple flesh causing brown trails. It is a textbook example of sympatric speciation by host plant shifting.

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Did You Know?

It shifted from native hawthorn to introduced apple trees in under 200 years, creating genetically distinct races.

Gray Hairstreak

One of the most widespread hairstreaks in North America with slate-gray wings and a bright orange spot near its tail. It uses a remarkably wide range of host plants.

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Did You Know?

Its caterpillars feed on plants from over 20 different families, making it one of the most generalist butterfly larvae in North America.