Scirtoidea

{{short description|Superfamily of beetles}}

{{automatic taxobox

| taxon = Scirtoidea

| display_parents =3

| image = Cyphon.padi.jpg

| image_caption = Cyphon padi (Scirtidae)

| authority = Fleming, 1821

| subdivision_ranks = Families

| subdivision = See text

}}

Scirtoidea is a superfamily of beetles.{{Cite journal |last1=Cai |first1=Chenyang |last2=Tihelka |first2=Erik |last3=Giacomelli |first3=Mattia |last4=Lawrence |first4=John F. |last5=Ślipiński |first5=Adam |last6=Kundrata |first6=Robin |last7=Yamamoto |first7=Shûhei |last8=Thayer |first8=Margaret K. |last9=Newton |first9=Alfred F. |last10=Leschen |first10=Richard A. B. |last11=Gimmel |first11=Matthew L. |last12=Lü |first12=Liang |last13=Engel |first13=Michael S. |last14=Bouchard |first14=Patrice |last15=Huang |first15=Diying |date=March 2022 |title=Integrated phylogenomics and fossil data illuminate the evolution of beetles |journal=Royal Society Open Science |language=en |volume=9 |issue=3 |pages=211771 |doi=10.1098/rsos.211771 |issn=2054-5703 |pmc=8941382 |pmid=35345430|bibcode=2022RSOS....911771C }} It is traditionally considered to consist of four families: Clambidae, Decliniidae, Eucinetidae and Scirtidae.{{Cite journal | doi=10.1111/j.1439-0469.2006.00369.x|title = The pterothoracic skeletomuscular system of Scirtoidea (Coleoptera: Polyphaga) and its implications for the high-level phylogeny of beetles| journal=Journal of Zoological Systematics and Evolutionary Research| volume=44| issue=4| pages=290–315|year = 2006|last1 = Friedrich|first1 = F.| last2=Beutel| first2=R. G.}} However, genetic studies have suggested that Clambidae and Eucinetidae belong to a separate superfamily Clamboidea, which also includes Derodontidae. Scirtoidea and Clamboidea are the two earliest diverging lineages of living polyphagans.

Two extinct families have also been assigned to this group:

• † Mesocinetidae Kirejtshuk and Ponomarenko 2010 Late Jurassic-Early Cretaceous (Asia)
• † Elodophthalmidae Kirejtshuk and Azar 2008 monotypic, Lebanese amber, Barremian