The superfamily Membracoidea are sap-sucking true-bugs that includes two of the largest families within what used to be called the "Homoptera"; the leafhoppers (Cicadellidae) and the treehoppers (Membracidae). The other families in this group are quite small, and have, at various points, generally been included as members within other families, though they are all presently considered to be valid, monophyletic groups. The relict family Myerslopiidae is restricted to New Zealand and South America while the Melizoderidae consist of two genera restricted to South Amerca.
Family relations within the Membracoidea
^ Szwedo, Jacek (2004). "An annotated checklist of Myerslopiidae with notes on the distribution and origin of the group (Hemiptera: Cicadomorpha)". Zootaxa. 425: 1–15. doi:10.11646/zootaxa.425.1.1.
^ Szwedo, Jacek (2004). "A new genus and six new species of ground-dwelling leafhoppers from Chile and New Zealand (Hemiptera: Cicadomorpha: Myerslopiidae)". Zootaxa. 424: 1–20. doi:10.11646/zootaxa.424.1.1. Abstract
^ Cryan, Jason R (2005). "Molecular phylogeny of Cicadomorpha (Insecta: Hemiptera: Cicadoidea, Cercopoidea and Membracoidea): Adding evidence to the controversy". Systematic Entomology. 30 (4): 563–574. doi:10.1111/j.1365-3113.2004.00285.x.
^ Andrew, K. G (1999). "The ground-dwelling leafhoppers Myerslopiidae, new family, and Sagmatiini, new tribe (Homoptera : Membracoidea)". Invertebrate Systematics. 13 (2): 207. doi:10.1071/IT96028.