Eggs are laid on the bottoms of leaves. Globemallow Leaf Beetles larvae emerge and look very different from their more mature selves. Larvae are black, dull and hairy. After pupating, however, they become a rich, red color with black lines and spots on the elytra (wing covering). As they age, the red gives way to orange and yellow and then eventually a bright green color. The black stripes and spots do not change, nor is the metallic sheen lost during this color morphing.
They are commonly found in areas of desert scrub, open fields and backyard gardens of the southwestern U.S. and Mexico. Summer months are their most active season.