Adults are 18-23 mm long, yellowish brown to almost black. Adults do not have the white scales some other grub beetles have. Males are very large, with seven segmented clubs on the ends of their antennae. Childers canegrub larvae have a pear-shaped patch of hairs on the undersurface of the rear end of the grub. Each side of this patch has about 35 hairs in three to four distinct rows.