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Urophora cardui
The Thistle Stem Gall Fly is a tiny insect that makes special bumps called galls on thistle plants. These galls are like cozy homes for the fly's babies to grow in!
生息地: Grasslands
The Thistle Stem Gall Fly is a small fly with a dark, robust body, often appearing brownish-black. Its most distinctive feature is its wings, which are patterned with dark bands and clear spots, giving them a mottled, checkered look. This wing pattern helps distinguish it from other small flies.
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カテゴリ
昆虫レア度
Common
危険度
1/5 · 非常に低い
スナップ
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Baby gall flies munch their way out of their plant home when grown!
Each thistle gall can hold several baby flies growing safely inside!
Scientists sometimes use these flies to help control invasive thistles!
Their nurseries are actually bumps growing right on a thistle stem!
Thistle Stem Gall Fly larvae can create sturdy plant galls that shelter and feed them as they grow.
Thistle Stem Gall Fly injects special chemicals that trick thistle plants into growing protective galls.
Adult flies sip plant nectar, while their larvae feast on the nourishing insides of thistle stems.
年齢による違い: Adults consume liquid sugars, while larvae feed on solid plant tissue within galls.
Cirsium arvense
Larvae consume stem tissue, forming galls for shelter and food.
Eurytoma robusta
The wasp lays eggs in the gall, and its larvae eat the fly larvae.
Passer domesticus
Birds may pick open galls to eat the fly larvae inside.
まだ別名はありません。
危険度
1/5 · 非常に低い
Don't touch the galls without asking an adult, as they are part of the plant's life.
6-10 mm
3-5 mm
10-30 日
Adult flies sip plant nectar, while their larvae feast on the nourishing insides of thistle stems.
Grasslands
6
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