Calystegia-sepium
Guides
Megacerus discoidus (Say, 1824)
red megacerus
Megacerus discoidus is a seed-feeding bruchine beetle in the family Chrysomelidae. It is a specialist predator of hedge bindweed (Calystegia sepium) seeds, with larvae completing their entire development within individual seeds. The species has been studied for its potential use in biological control of this weedy vine. It occurs in North America and Central America.