The uterus mark cup is a special tube to securely hold the uterus while the mark is being glued or drawn. The queen bee is placed in the middle of a glass tube and, using a piston, is directed towards the mesh at the end of the tube. The soft covering of the foam rubber piston avoids injury to the uterus. The uterus is pressed against the mesh by a piston and is securely fixed while the mark is being applied. The mesh has cells of sufficient size for marking