Phalacrognathus muelleri, commonly known as the Rainbow Stag Beetle—also referred to as the King Stag Beetle, Magnificent Stag Beetle, or Mueller’s Stag Beetle—is a spectacular species from the Lucanidae family. Native to northern Queensland, Australia, and parts of New Guinea, this beetle is famed for its vibrant, metallic exoskeleton, which can appear in striking shades of red, green, blue, or black depending on the specimen.
It is the sole representative of the genus Phalacrognathus, a genus closely related to Lamprima. Due to its dazzling iridescence and relative rarity, Phalacrognathus muelleri is highly prized by collectors and nature enthusiasts. In fact, it has served as the official emblem of the Entomological Society of Queensland since 1973.
This vitrine contains one of only two exceptional specimens we have ever sourced—making it a truly unique and desirable addition to any collection of natural history or decorative art. Elegantly displayed in a handmade glass vitrine, it showcases the beetle’s majestic form and brilliance in full detail.