The answer to the first question: put the leg in the correct position with an insect needle, and then align the joint with 502 glue, and the position of the hind leg is fixed. The antenna and legs will be shaped one after another. If you are not satisfied, wash off the glue with chloroform and start over.

The answer to the second question: It is not recommended to coat the specimens of large animals with formaldehyde and sprinkle some salt in the air, because this method can't act on the body, the microorganisms in the body will still move and eventually damage the specimens, and the salt will absorb moisture and regain moisture in rainy days. Dry insects can be stored in ambient air, but they are easily destroyed by other small animals (such as mice and moths). Some specimens can't be cleaned after being stained with dust, which will affect their appearance. It is recommended to keep them away from light.