Homoptera is a deprecated

Deprecation

In the process of authoring computer software, its standards or documentation, deprecation is a status applied to software features to indicate that they should be avoided, typically because they have been superseded...

 suborder of order Hemiptera

Hemiptera

Hemiptera is an order of insects most often known as the true bugs , comprising around 50,000–80,000 species of cicadas, aphids, planthoppers, leafhoppers, shield bugs, and others...

; recent morphological studies and DNA

DNA

Deoxyribonucleic acid is a nucleic acid that contains the genetic instructions used in the development and functioning of all known living organisms . The DNA segments that carry this genetic information are called genes, but other DNA sequences have structural purposes, or are involved in...

 analysis strongly suggests that the order is paraphyletic. It was therefore split into the suborders Sternorrhyncha

Sternorrhyncha

Sternorrhyncha is a suborder of the Hemiptera which contains the aphids, whiteflies, and scale insects, groups which were traditionally included in the order Homoptera. "Sternorrhyncha" refers to the rearward position of the mouthparts relative to the head...

, Auchenorrhyncha

Auchenorrhyncha

The Auchenorrhyncha is the suborder of the Hemiptera which contains most of the familiar members of what was called the Homoptera - groups such as cicadas, leafhoppers, treehoppers, planthoppers, and spittlebugs. The aphids and scale insects are the other well-known "Homoptera", and they are in...

, and Coleorrhyncha

Coleorrhyncha

Peloridiidae is a family of true bugs, comprising 17 genera and 36 species. They are small, ranging in length from 2 to 4 mm, rarely seen, peculiarly lumpy, flattened bugs found in Patagonia , New Zealand, eastern Australia, Lord Howe Island and New Caledonia. All the Peloridiidae species are...

.

However, there is currently debate over the monophyly of Auchenorrhyncha. See Heteroptera

Heteroptera

Heteroptera is a group of about 40,000 species of insects in the Hemiptera. Sometimes called "true bugs", that name more commonly refers to Hemiptera as a whole, and "typical bugs" might be used as a more unequivocal alternative since among the Hemiptera the heteropterans are most consistently and...

 and Prosorrhyncha

Prosorrhyncha

The name Prosorrhyncha is a name for a suborder of Hemiptera, comprising a grouping of the traditional taxon "Heteroptera" plus its sister taxon, the family Peloridiidae...

 for more information on such points.

The Homoptera as recognised over the last century or so, include the aphids, scale insects, cicadas, and leafhoppers. They are all "true bugs

Hemiptera

Hemiptera is an order of insects most often known as the true bugs , comprising around 50,000–80,000 species of cicadas, aphids, planthoppers, leafhoppers, shield bugs, and others...

" and they all have sucking mouthparts.