The present invention relates to a cage (1) for breeding insects, comprising a space (2), limited by walls (3, 4, 5, 6, 7, 8) for housing said insects and/or larvae thereof, wherein the walls are inpenetrable by the insects, at least one of the walls(4) is at least partly light translucent, and at least one of the walls comprises an openable part (10, 11, 12) for inserting insects. The invention further relates to a rack for holding a plurality of such cages, comprising at least one light source, wherein the lighting source is arranged such that it can illuminate the interior of a cage through the at least one at least partly light translucent wall, as well as a method for breeding insects.