Euthamia
Guides
Asteromyia euthamiae
Euthamia leaf gall midge
Asteromyia euthamiae is a gall midge species described by Raymond Gagné in 1968. It is widely distributed across northern North America, where it induces leaf galls on Euthamia plants. The species is notable for producing distinctively colored galls with dark bodies and contrasting marginal bands.
Dasineura carbonaria
Dasineura carbonaria is a species of gall midge in the family Cecidomyiidae. It forms galls on Euthamia graminifolia (grass-leaved goldenrod), a perennial herb native to North America. The species was described by Felt in 1907. Like other members of the genus Dasineura, this species induces plant tissue to form protective structures that house and nourish its developing larvae.
Microrhopala vittata
goldenrod leaf miner, goldenrod leafminer
Microrhopala vittata is a small leaf beetle in the family Chrysomelidae, commonly known as the goldenrod leaf miner. Adults are 5–6 mm in length and exhibit variable coloration from red to black with distinctive lighter vittae (stripes) on the elytra. The species is highly specialized on goldenrods (Solidago spp.) and flat-topped goldenrod (Euthamia graminifolia), with larvae mining between leaf surfaces and adults feeding on upper leaves. Ecological studies have demonstrated its potential as a keystone species in old field communities, where outbreak populations can dramatically reduce tall goldenrod dominance and alter plant community composition for multiple years.
Rhopalomyia fusiformae
Goldentop Sessile Gall Midge
Rhopalomyia fusiformae is a gall midge species in the family Cecidomyiidae, first described by Felt in 1907. It is commonly known as the Goldentop Sessile Gall Midge. The species is known to induce galls on host plants and has been documented in the northeastern United States.
Rhopalomyia lobata
Rhopalomyia lobata is a gall midge (family Cecidomyiidae) that induces large, multi-chambered galls on the stems and buds of Euthamia graminifolia (grass-leaved goldenrod). The species has a broad North American distribution spanning from Florida to Oregon and northward across Canada. Adult emergence occurs during late June to mid-July, after which the galls desiccate and persist on host plants for several weeks.