https://link.springer.com/article/10.1007/s13127-020-00448-x https://link.springer.com/article/10.1007/s13127-020-00448-x See references therein for metals num

https://link.springer.com/article/10.1007/s13127-020-00448-x https://link.springer.com/article/10.1007/s13127-020-00448-x See references therein for metals numerous other orders of not just insects but arthropods. "metal mandible Hymenoptera" as a search.