Sprays of horticultural oil, insecticidal soap or malathion, or a soil drench of imidacloprid, are among the compounds registered for use against these pests in Connecticut. Consult the label for dosage rates and safety precautions. Red milkweed beetle, Tetraopes tetrophthalmus. The elytra, or wing covers and pronotum are red with smaller black spots on them. The compound eye is divided in half by the antennae.
Adults stridulate, or produce squeaking sounds, when captured.
Monarch butterfly, Danaus plexippus. The larvae of this well known orange and black butterfly eat butterfly weed foliage. Control is unnecessary.