Tag Archives: Artemesia tridentata

Sponge Gall Midge

This gallery contains 6 photos.

One of the most common galls found on tall sagebrush (Artemisia tridentata) is a spongy gall induced by the sponge gall midge (Rhopalomyia pomum).  Tall sagebrush, also commonly called Great Basin or big sagebrush, is found between 4,000 and 10,000 … Continue reading

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Old Sagebrush Stem Gall

This gallery contains 5 photos.

The stem gall tephritid fruit fly (Eutreta diana) causes galls to form on tall sagebrush (Artemesia tridentata) following oviposition of a single egg in its axillary or terminal buds. In my last post (“Sagebrush Stem Gall”) I noted that the … Continue reading

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