The tribal classification of Derbidae with respect to Otiocerini is presented and discussed. Key to extant and fossil genera of Otiocerini is provided. New genus and species from Eocene Baltic amber – Lugeilangor elektrokleistis gen. n. et sp. n. of Derbidae tribe Otiocerini Muir is described. It seems to be related to the extant Asian-Pacific genera Paralyricen Muir, 1913, and Flaccia Stål, 1866. It is the second record of the family Derbidae in Eocene Baltic amber inclusions. Palaeobiological and biogeographical significance of the fossil is discussed.