species 1,312 observations
Bull Thistle Gall Fly
Urophora stylata
Field notes
Urophora stylata is a species of tephritid or fruit flies in the genus Urophora of the family Tephritidae. The host plant for the larvae is usually a thistle of genus Cirsium or Carduus.
It has been introduced in North America as a biocontrol of C. vulgare, which has become an invasive species.
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2
native plants
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Range
Greener is more native, amber more introduced; paler is less certain. How this was decided