Baits may be made using molasses or sugar and mixing with fruit. Beer is often added to the mix. This site is then monitored during the hours of dusk to full darkness. Underwing moths are particularly susceptible to this method in late summer on humid nights. Most moths captured will already have mated, so we need not be overly concerned about catching and holding both sexes.
Some female moths look completely different from their male counterpart.
This is called sexual dimorphism. The Luna moth has seasonal dimorphism, meaning that the midsummer brood will look different from the early spring ones. Simply place the female moth in the bag and close it up as shown. Eggs will be glued to the inside of the bag and can be harvested simply by cutting the area of the bag where they were placed. Some moths may drop their eggs into the bottom of the bag.