Found in Permian deposits in Russia: Vologda Oblast , Veliky Ustyugsky District , the left bank of the Sukhona River, near the village of Isady (locality “Isady”); Upper Perm (Tatarian; Severodvinsk stage). The description was made on wings about 1 cm long with parallel veins Sc, RA, RS, vein branches MA and MP + CuA1, and a short distal part of CuA2 [1] .
The venation of wings is so unusual that immediately these residues could not be attributed to any of the known, both modern and extinct orders from the subclass of winged insects [1] . In 2015, the Russian scientist Dmitry Shcherbakov, as a result of analyzing a large amount of paleoentomological material, assigned several extinct genera ( Nestorembia , Nikolembia , Palaeomesorthopteron ) to the Alexarasniidae family monotypic before this, and the family itself to the new Palembiodea embryo suborder [2] .
The generic name Alexarasnia was given in honor of the prominent Russian paleontologist and entomologist Professor Alexander Pavlovich Rasnitsyn ( Paleontological Institute of the Russian Academy of Sciences , Moscow ). The description was made by Russian entomologist Andrei Gorokhov ( Andrej V. Gorochov , St. Petersburg , Zoological Institute, Russian Academy of Sciences ) [1] .