Two new Cecidomyiidae are added to the Lowermost Eocene Oise amber fauna: in the Lestremiini, Allarete patriciae sp. nov. and in the Winnertziini, Rhipidoxylomyia rasnitsyni sp. nov. Allarete is widely distributed in the Holarctic, Afrotropical, and Oriental regions, and Rhipidoxylomyia in the Palaearctic and Oriental regions, suggesting ancient origins, which would be confirmed by the present discoveries.