There are several types of beetles that feed on milkweed. Some chew only the leaves while others attack the pods. The beetle shown in this picture is easy to find on common milkweed. If you find a plant with milkweed beetles, check on the bottom side of the leaf. Is the midvein of the leaf chewed through? This helps restrict the flow of sap to the leaves and makes the leaf taste better.
Did you know that the red milkweed beetle on the left has four eyes instead of just two? In fact, the antennae grows up between the eyes.