Homoptera is a suborder of order Hemiptera that is considered by some taxonomists to be paraphyletic, and therefore deprecated (obsolete).[1][2][3] It was therefore split into the suborders Sternorrhyncha, Auchenorrhyncha, and Coleorrhyncha.[4][5] The earlier work was based on nuclear DNA, but more recent [when?] phylogenetic analysis using mitochondrial DNA suggest that Homoptera may be a monophyletic group after all, a sister group of Heteroptera.[6] The cause of the disparity in the analyses is suggested to be the long branch attraction effect in phylogenetic analysis, due to rapidly evolving DNA regions.[6]
The Homoptera include the aphids, scale insects, cicadas, and leafhoppers, which all have sucking mouthparts.