Pamphilioidea

Pamphilioidea Temporal range: Cretaceous-Present PreꞒ Ꞓ O S D C P T J K Pg N
Acantholyda nemoralis (Pamphiliidae)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Hymenoptera
Suborder:	Symphyta
Superfamily:	Pamphilioidea Cameron, 1890
Families
Megalodontesidae Konow, 1897 Pamphiliidae Cameron, 1890 †Mirolydidae Wang, Rasnitsyn & Ren, 2017[1] †Xyelydidae Rasnitsyn, 1986
Synonyms
Megalodontoidea Konow, 1897

The Pamphilioidea are a small superfamily within the Symphyta (the sawflies), containing some 250 living species restricted to the temperate regions of Eurasia and North America. These hymenopterans share the distinctive feature of a very large, almost prognathous head, which is widest ventrally.

The superfamily contains two extant families. The Pamphiliidae are the leaf-rolling or web-spinning sawflies such as Acantholyda, Neurotoma, and Pamphilius whose larvae eat plants such as conifers; the adults have simple filiform antennae. The Megalodontesidae include genera such as Megalodontes and several fossil groups. Their larvae eat herbaceous plants, while the adults have serrate or pectinate antennae.^[2]