John’s suggestion of acetone-free nail varnish remover (ethyl acetate) seems to be great. Put the specimen down for a spore print, put a piece of sponge with a dash of ethyl acetate on it, cover, and leave overnight. Attached pictures show the idea. A specimen on a slide, the sponge in an old coverslip box, and the glass cover. Next picture shows deceased maggots feet up on the surface of the shroom. Thanks John. 
