Claspettomyia Grover 1964

Genus Claspettomyia Grover, 1964 The genus Claspettomyia previously comprised 35 species from all biogeographic regions but the Australasian/Oceanian region (Gagné & Jaschhof 2021; de Almeida Garcia et al. 2023b). Several of the eight species found in Europe also occur in Asia or North America (here marked with asterisks): C. carpatica Mamaev, 1998, C. formosa (Bremi, 1847) *, C. hamata (Felt, 1907) *, C. niveitarsis (Zetterstedt, 1850) *, C. paneliusi Mamaev, 1998, C. rossica Mamaev, 1998, C. toelgi (Kieffer, 1913) *, and C. ussuriensis Mamaev, 1998 *. In their revision of the Claspettomyia of Sweden, Jaschhof & Jaschhof (2013: 274) recognized five species, including C. aff. kirghizica Mamaev, 1998, which to our current knowledge is an unnamed species. The treatment of Claspettomyia in the present paper proceeds where the 2013 revision ended, with the novelty that the delimitation of species is now supported by CO1 sequences, if available. As regards the merit of morphological structures for defining species, the suggestions by Jaschhof & Jaschhof (2013: 275) remain valid. Also, the need to revise the taxonomy of northern hemisphere Claspettomyia persists, although such an ambition seems unrealistic insofar as the bulk of the critical material is deposited in hard-to-reach collections in Russia, China, and India (Gagné & Jaschhof 2021). The fact that morphological descriptions of Claspettomyia in the literature are all too often insufficient for the purpose of species identification affects also the present project. Of 11 species identified here, only six can be related to a specific name: C. hamata and C. toelgi, both recognized earlier as occurring in Germany (Jaschhof & Jaschhof 2021b), two first-time records, and two new species, which are described and named below. The remaining five species resemble in various ways C. carpatica, C. formosa, C. hamata, and C. niveitarsis, but I am unable to decide whether they are undescribed or unidentifiable from the literature.