Dinopanorpa

Dinopanorpa is an extinct monotypic genus of scorpionfly that contains the single species Dinopanorpa megarche and is the type genus of the extinct family Dinopanorpidae. The genus is known from a single hindwing specimen, the holotype, currently deposited in the collections of the National Museum of Natural History, as number "69173", and which was first described by Dr Theodore D.A. Cockerell in 1924. The name is a combination of the Greek deino meaning "terrible" or "monstrous" and "Panorpa", the type genus of Panorpidae the family in which Dinopanorpa was first placed.

The hindwing was found by A. Kuzentzov in Early Eocene to Early OligoceneKhutsin Formation deposits outcropping along the Kudya River in Primorsky Krai, Russia. The 30 millimetres (1.2 in) long specimen is a nearly complete compression fossil missing only a small section near the tip of the wing due to a break in the matrix, and having well preserved dark and light coloration.Dinopanorpa possesses an "R₁" vein which almost reaches the apex of the wing and turns down towards the wing tip near its termination. This elongated "R₁" vein is a character not found in any other extant or extinct mecopteran families and is only shared by the related genus Dinokanaga found in Eocene formations of British Columbia, Canada and Washington State, USA. The two genera are distinguished by the number of wing vein characters including lack of fine reticulated crossveins in Dinopanorpa, and the "Rs" vein branched 3-5 times in Dinokanaga.