Rudbeckia-specialist
Guides
Uroleucon rudbeckiae
goldenglow aphid
Uroleucon rudbeckiae, the goldenglow aphid, is a bright red aphid species specialized on Rudbeckia host plants. Adults measure 2.4–3.2 mm with distinctive yellow legs, black antennae, and reticulated siphunculi. Populations exhibit characteristic mid-summer rise and late-summer decline on native perennials, with colony dynamics driven by immigration patterns and predation pressure rather than weather or host quality degradation.