Uroleucon minutum is an aphid in the order Hemiptera. It is a true bug and sucks sap from plants.
References
http://animaldiversity.org/accounts/Uroleucon_minutum/classification/ https://www.gbif.org/species/125065691 http://aphid.aphidnet.org/Uroleucon_minutum.php http://www.catalogueoflife.org/col/search/all/key/Uroleucon+minutum