A vivid, metallic flower beetle with exceptional colour and easy, reliable care.
Protaetia aeruginosa is a beautifully vibrant Asian flower beetle, instantly recognisable by its intense metallic green—often shifting toward turquoise or blue depending on the light. The elytra have a smooth, glossy finish that gives the species a “jewel beetle” look, making it a standout in any display enclosure. Adults are medium‑sized, active, and confident, with a gentle temperament that suits both new and experienced keepers. Come in Green, Black and Red as adult. Larvae are from mixed colour stock
In the wild, this species inhabits warm forest regions rich in fruit, sap flows, and decaying wood. In captivity, P. aeruginosa is straightforward and dependable: adults feed readily on beetle jelly, soft fruits, and nectar‑style foods, and they settle quickly into routine care. Their movement is bold but not frantic, making them enjoyable to watch as they explore, feed, and interact.
Larvae develop steadily in nutrient‑rich flake soil or leaf litter mixes, forming strong pupation cells when moisture is kept stable. Development is smooth and predictable, and adults emerge with excellent colour when kept at consistent temperatures. Once mature, they are hardy, long‑lived, and maintain their bright sheen throughout their adult life.
With its striking colour, calm behaviour, and reliable breeding cycle, Protaetia aeruginosa is an excellent choice for anyone looking to add a visually impressive, easy‑care flower beetle to their collection.
Metallic Flower Beetle (Protaetia aeruginosa)
Specifications
Size: L2 Grub (mixed colour stock)
Status: Captive Bred
Range: China, Taiwan, Vietname, Laos, Northern Thailand
Care information
Temperature 22-24 C Humidity 60-75 % 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
Larval Diapause
After the larvae have grown to their final instar (L3), they can be placed in a cooler environment for a winter hibernation (diapause). Temperatures around 6-14°C are suitable for this period, lasting about 2-3 months.

