Earwigs make up the insect order Dermaptera and are found throughout the Americas, Africa, Eurasia, Australia and New Zealand. With about 2,000 species in 12 families, they are one of the smaller insect orders.
Phosphorescent paint is commonly called glow-in-the-dark paint. It is made from phosphors such as silver-activated zinc sulfide or doped strontium aluminate, and typically glows a pale green to greenish-blue color.
Many vintage watches, especially military watches, have gold or whitish colored paint on the hands or on the numbers on the dial. This paint is quite likely made of a phosphorescent compound mixed with radium. This causes, or at least used to cause, the numbers and hands to glow in the dark.