Phalacrognathus muelleri, famously known as the Rainbow Stag Beetle, is a dazzling jewel of the insect world, native to the rainforests of northern Queensland and New Guinea. Males can reach up to 70 mm and are prized for their iridescent exoskeletons that shimmer in metallic hues of green, red, and blue. Despite their formidable mandibles, they’re surprisingly gentle and make excellent display pets. Larvae develop slowly in decaying wood rich in white-rot fungi, taking up to three years to mature. With their long lifespan and stunning appearance, they’re a crown jewel in any beetle collection.
Rainbow Stag Beetle Grubs (Phalacrognathus muelleri) - Green Colour Phase
Size: L3 - Green Colour Line
Status: Captive Bred
Range: Northern Queensland and New Guinea
Temperature 22-26 C Humidity 60-80 % Diet Grubs - Flake Soil, Rotting Wood
Adults - soft fruit, mushrooms, beetle jelly
Enclosure As grubs keep in a smaller container in a depth
of substrate
As adults keeper terrestrial with a deep substrate
layer but also lots of wood and leaf little
for climbing