13. Ctesias serra (Fabricius, 1792)

Local references: Bercio & Folwaczny 1979 (reported from Loppöhnen [Rybnoe in Zelenogradsk district], Königsberg and Moosbude [Kaliningrad]) .

Material: Baltiisk district, Tanketino vicinity, 54.72°N, 19.96°E, 25.02.2021, 2 exx (larvae), under bark of dead Quercus robur, between web material of spider nest .

Comments: This species is poorly known (probably because cryptic and short life of imago). It is the first actual report of the species for Kaliningrad region.