Semagystia pljustchi is a moth in the family Cossidae. It was described by Yakovlev in 2007. It is found in Kazakhstan and Kyrgyzstan.
The length of the forewings is 11–14 mm., 2007: New species of Palearctic carpenter-moths (Lepidoptera: Cossidae). Eversmannia 10(2007): 3-23. Full article:
References
Natural History Museum Lepidoptera generic names catalog