Rhopalomyia betheliana

Rhopalomyia floccosa

Rhopalomyia clinata

Rhopalomyia alticola

Rhopalomyia gnaphalodis

Rhopalomyia occidentalis

Rhopalomyia coloradella

Rhopalomyia tridentatae

Rhopalomyia pomum

Asteromyia gutierreziae

Asteromyia grindeliae

Rhopalomyia ericameriae

Fusiform flower or leaf bud galls, length 4mm.

Irregular, lobate, woolly masses, apparently arising from lateral buds and frequently confluent, the individual galls with a diatmeter of about 4 mm.

Subconical, thin-walled, obliquely-set, brownish or reddish leaf galls with a length of 1.5 mm, and a diameter of 0.5 mm.

Globular, woolly galls with a diameter of about 1 cm.

Irregular, lobulate, polythalamous, white, pubescent gall, diameter 1 cm.

Ovate, thin-walled, oblique leaf galls, length 1mm., also breeds in apparently normal flower buds.

Deformed flower heads, length 10 mm, diameter 5-6 mm. On undetermined Artemisia.

Oval, bud-like flower gall the size of a pea.

Globose, variable, monothalamous or polythalamous leaf, bud or rosette galls or a bladdery gall arising from the leaf, pubescence variable, dimensions 3-15 mm. On Artemisia tridentata. 


Blackened, carbonaceous tissue on leaves of Grindelia.

Little known midge galls of certain composites