* Lachesilla tanaidana Roesler, 1953

MATERIAL EXAMINED. Loev district, Rudnya Kameneva village, 52°05′48″N, 30°44′54″E, 119 m a.s.l., sand dunes, from grass vegetation dominated by Poaceae and Canada fleabane near pine trees, 8.08.2021, 2♂, 4♀, collected by sweep netting .

DISTRIBUTION. Palaearctic species. Known from some localities European Russia [Roesler, 1953; Golub, Golub, 2013; Georgiev et al., 2023].

NOTES. A small (c. 1.5– 2 mm) barkfly. Xerophilous species that lives on low vegetation, especially on the dead parts of herbs close to the ground, as well as in the leaf litter.