Diptera: Flies - Alex Wild Photography
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New spring goldenrod grows alongside an old stem gall in an Illinois meadow. The gall is made by a fruit fly, Eurosta solidaginis, which induces the plant to produce a protective structure around the developing larva.

Urbana, Illinois, USA

New spring goldenrod grows alongside an old stem gall in an Illinois meadow. The gall is made by a fruit fly, Eurosta solidaginis, which induces the plant to produce a protective structure around the developing larva. Urbana, Illinois, USA

meadowgoldenrod stem gallSolidagogall flyEurosta solidaginisTephritidaeextended phenotype