The present invention relates to means and methods for increasing the efficiency of recombinant protein expression and, more particularly, to means and methods for optimizing the industrial production of recombinant proteins in pyralid moths eggs (which are insect pests of stored foods), especially Mediterranean flour moth eggs (Ephestia kuehniella). Furthermore, the present invention relates to the pyralid moths eggs itself which contains a recombinant baculovirus and, infection of recombinant baculovirus into pyralid moths eggs and, transformation or transduction or transfection by recombinant baculoviruses or bacmids. In addition, it relates to an appropriate device for carrying out the method of the present invention.
