Family † Nanosialidae Shcherbakov, 2013

† Nanosialidae Shcherbakov, 2013: 50 [type genus: † Nanosialis Shcherbakov, 2013: 51]. — Engel et al. 2018: 535.

Taxonomic notes

† Nanosialidae was originally described by Shcherbakov (2013), who included in it four new extinct genera and placed it in †Siarapha, a new suborder of Megaloptera . Shcherbakov considered †Siarapha to be transitional between Megaloptera and Raphidioptera . Here, we follow Engel et al. (2018) in treating this family, and all of its originally-included genera († Hymega Shcherbakov, 2013, † Lydasialis Shcherbakov, 2013, † Nanosialis Shcherbakov, 2013, and † Raphisialis Shcherbakov, 2013) and species from the Russian Poldarsa Formation (Permian: Lopingian), as stem-group Raphidioptera .