One tribe with 8 genera in North America, according to American Beetles(1)
Tribe Chilocorini Mulsant 1846
Round, oval, or shield-shaped. Highly convex, explanate (helmet-like, with a flared "rim"). Often black with 2-6 red or orange spots; sometimes red or orange with or without spots; two species metallic blue.
Larvae: usually black, sometimes with pale or red markings, always with long "spines."
Scale insects, especially armored scales. Sometimes aphids, psyllids, and other soft-bodied insects and larvae.