First, catch butterflies with insect nets. Be careful not to pounce too much when catching butterflies, and pay attention to keeping the body organs of butterflies intact. After catching it, put it in a poison gas bottle and poison it. In order to prevent it from jumping around in the poison bottle and damaging its wings, it is necessary to add highly toxic drugs to the poison bottle to make the butterfly die quickly. The most common poison is potassium cyanide or sodium cyanide. However, we must be careful not to neglect it when using it. Poison bottles must be kept well, and dichlorvos and chloroform can also be used for execution. In addition, the wings of butterflies are covered with scales. When a finger touches them, the scales will fall off, leaving traces, which makes the specimens unsightly, so we should use tweezers to take butterflies. If you use your fingers, your fingers can't touch the front of the wings, only the back.

Next is plastic fixation. Insert the butterfly's head, chest and abdomen into the groove of the wing display board, and carve a small groove in the middle of the thick foam instead. Then nail the left and right front wings symmetrically on the exhibition board with two insect needles, and then nail the rear wings in the same way. Take two pieces of table paper (or tissue paper) slightly larger than the wings, gently press them on the wings, press the table paper on the back wings with the tips of tweezers, and pull out the insect needles that nail the back wings. Press the front wing in the same way and pull out the insect needle that nails the front wing. Nail the table paper pressed on the front and rear wings with pins, arrange the tentacles and feet, and fix them with pins. The abdomen is padded with cotton wool to prevent the abdomen from sagging.

Finally, sprinkle some naphthalene powder and put it in an oven to dry, or put it in a ventilated place to dry in the shade. After drying, it is a butterfly specimen for our long-term viewing.