The dingy fritillary (Boloria improba) is a butterfly of the Nymphalidae family. In Europe it is only found in small parts of Scandinavia, more specifically the border region between Norway, Sweden and Finland. The species is also present in North America in the North-Eastern part of Alaska and some isolated populations in the Canadian part of the Rocky Mountains, South-Western Wyoming and South-Western Colorado. In Russia it is present in the North-East (the Chukotka region). The wingspan is 28–34 mm. The butterfly flies from June to August depending on the location.