The maize weevil is a dull red-brown to nearly black winged snout beetle with fine microsculpture and is shiny. The antennae has eight segments and are often carried in an extended position when the insect is walking. The species usually have four pale reddish-brown or orange-brown oval markings on the elytra, but these are often indistinct.
Good store hygiene plays an important role in limiting infestation by S. zeamais. The removal of infested residues from last season's harvest is essential. Chemical control; Actellic Gold dust, fumigation with Aluminium Phosphate tablets.