Helianthus annuus
This species feeds almost exclusively (oligophagy) on leaves and flowers of the family "Asteraceae" tribe "Heliantheae", e.g. sunflowers ("Helianthus annuus") and rough cockleburs ("Xanthium strumarium"), with a marked predilection for common ragweed ("Ambrosia artemisiifolia"), which is invasive in Europe and Asia.