Aphthona nigriscutis
 Aphthona nigriscutis is a root-feeding flea beetle of the genus Aphthona. It is one of 5 Aphthona spp. that has been used in Alberta Canada to control leafy spurge an invasive plant that reduces pasture quality and degrades natural habitats. It along with A. lacertosa is one of only two biocontrol agents thought to be effective against leafy spurge. Larvae cause the most damage to the plant by feeding on the roots.