Asphondylia gutierreziae

Cecidomyiidae

Rhopalomyia

Gutierrezia sarothrae

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Rhopalomyia gutierreziae

This species produces a pale green, fusiform or suboval swelling in the flower heads of Gutierrezia sarothrae. The gall is about 7 mm long, 3 mm broad and was taken at Las Vegas, N. M., adults appearing October 31st. An examination of the types in the United States National Museum shows that it probably belongs to this genus. 

A Study of Gall Midges III

Gutierrezia sarothrae
Oval, flower bud gall, length 7 mm. Felt '15i, p. 274
Itonid. Gutierrezia bud midge, Rhopalomyia gutierreziae


Key to American Insect Galls

Modified, aborted floret...*Rhopalomyia gutierreziae* (Cockerell)
Galls have a hard shell and are slightly longer and wider than normal florets. Adults were reared in October. Host: *G. sarothrae*.

The plant-feeding gall midges of North America

**[Rhopalomyia] gutierreziae**. USA (New Mexico). *Gutierrezia sarothrae* (Asteraceae). 
*Asphondylia gutierreziae* Cockerell 1901: 23. USA: New Mexico, Las Vegas; ST; ♂,P; USNM.

A Catalog of the Cecidomyiidae (Diptera) of the World 5th Edition - 2021