Adult20 mm (¾ in) long, that has metallic green coloration (but can be bronze, copper, violet, blue/black or grey) with a distinct V shaped scutellum, the small triangular area between the wing cases just below the thorax, and having several other irregular small white lines and marks. The underside is a coppery colour.The metallic green colouring of the beetle's surface is the reflection of mostly circularly polarised light, typically left circularly polarized light. When viewed through a right circular polariser, they appear to be colourless. Many species of scarab beetles (scarabaeidae) are known to emit typically left circularly polarised light.LarvaeThe larvae are C–shaped, have a very firm wrinkled hairy body, a very small head and tiny legs; they move on their backs, which is a very quick way to identify them.
Adult beetles might emerge in the autumn, but the main emergence is in the spring when they mate. Following mating, the females lay their eggs in decaying organic matter, and then die.Larvae overwinter wherever they have been feeding, that is in compost, manure, leafmould or rotting wood, and they pupate in June/July. Larvae grow very fast, and before the end of autumn they would all have moulted twice. They have a two year life cycle.
Rose chafers are found over southern and central Europe and the southern part of the UK where they can be very localized.Cetonia aurata is a common species throughout much of southern and central Europe but becomes more scarce further north. The species occurs in all Europe except the Iberian Peninsula and Southern Italy and extends its range eastwards to Siberia.Cetonia aurata has very similar looking related species in Spain and Italy, while other representatives of the genus occur in the whole Palearctic.
The adults of this species are commonly found in gardens, sitting in flowers.The larvae (also called white grubs) live inside rotting wood and humus and are found in dead tree trunks or compost (in urban habitats).
Depth range (m): -1 - 18
Depth range (m): -1 - 18
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adult of Cetonia aurata feeds on live leaf of Rosa
Remarks: season: 6
Foodplant / internal feeder
larva of Cetonia aurata feeds within dead wood of Broadleaved trees
Foodplant / internal feeder
larva of Cetonia aurata feeds within dead compost of Herbaceous Plants
Life History and Behavior
Rose chafers are capable of very fast flight, flying with their wing cases down like bumble bees.The adult beetles are active between April and September; they fly clumsily and are typically seen in sunny weather (hence the common name), and are often perceived as garden pests for this reason.
Adult beetles feed on the
Molecular Biology and Genetics
Statistics of barcoding coverage: Cetonia aurata
Public Records: 0
Specimens with Barcodes: 8
Species With Barcodes: 1
Cetonia aurata, called the rose chafer or, sometimes, the green rose chafer or goldsmith beetle, is a beetle, 20 mm (¾ in) long, that has a metallic green colouration and a distinct V-shaped scutellum.
The scutellum is the small V-shaped area between the wing cases; it may show several small, irregular, white lines and marks.
The underside of the beetle has a coppery colour, and its upper side is sometimes bronze, copper, violet, blue/black, or grey.
The rarely seen noble chafer is very similar to the rose chafer. One way to identify it is to look at its scutellum; on the noble chafer the scutellum is an equilateral triangle, but on the rose chafer it is an isosceles triangle.
Rose chafers are capable of very fast flight; they fly with their wing cases down. They pull their feet inside their legs and can push them out, if needed.
Rose chafers are found in southern and central Europe and in the southern part of the United Kingdom, where they sometimes seem to be very localized. They are a very beneficial saprophagous species (detritivores). Their larvae are the insect equivalent of earthworms.
The larvae are C–shaped and have
- a firm, wrinkled, hairy body,
- a very small head,
- and tiny legs.
The larvae overwinter wherever they have been feeding, which may be in compost, manure, leaf mould, or rotting wood. They grow very quickly and will have moulted twice before the end of autumn. They have a two-year life cycle.
They pupate in June or July. Some adult beetles may emerge in autumn, but the main emergence is in spring, when the beetles mate.
After mating, the female beetles lay their eggs in decaying organic matter and then die.
Origin of its colour
The metallic green colouring of the beetle is caused by the reflection of mostly circularly polarised light, typically left circularly polarised light. When viewed through a right circular polariser, the beetle appears to be colourless.
In analytical psychology
My example concerns a young woman patient who, in spite of efforts made on both sides, proved to be psychologically inaccessible. The difficulty lay in the fact that she always knew better about everything. Her excellent education had provided her with a weapon ideally suited to this purpose, namely a highly polished Cartesian rationalism with an impeccably “geometrical” idea of reality. After several fruitless attempts to sweeten her rationalism with a somewhat more human understanding, I had to confine myself to the hope that something unexpected and irrational would turn up, something that would burst the intellectual retort into which she had sealed herself. Well, I was sitting opposite her one day, with my back to the window, listening to her flow of rhetoric. She had had an impressive dream the night before, in which someone had given her a golden scarab — a costly piece of jewellery. While she was still telling me this dream, I heard something behind me gently tapping on the window. I turned round and saw that it was a fairly large flying insect that was knocking against the window-pane from outside in the obvious effort to get into the dark room. This seemed to me very strange. I opened the window immediately and caught the insect in the air as it flew in. It was a scarabaeid beetle, or common rose-chafer (Cetonia aurata), whose gold-green colour most nearly resembles that of a golden scarab. I handed the beetle to my patient with the words, “Here is your scarab.” This experience punctured the desired hole in her rationalism and broke the ice of her intellectual resistance. The treatment could now be continued with satisfactory results.
In a separate account of the incident in the same book, Jung wrote, “I must admit that nothing like it ever happened to me before or since, and that the dream of the patient has remained unique in my experience.”
- Hegedüsa, Ramón; Győző Szélb and Gábor Horváth (September 2006). "Imaging polarimetry of the circularly polarizing cuticle of scarab beetles (Coleoptera: Rutelidae, Cetoniidae)". Vision Research 46 (17): 2786–2797. doi:10.1016/j.visres.2006.02.007. PMID 16564066. Retrieved 2009-05-26.
- Jung, C.G. (1969). Synchronicity: An Acausal Connecting Principle. Princeton, New Jersey: Princeton University Press. pp. 109–110. ISBN 978-0-691-15050-5.
- Jung, C.G. (1969). Synchronicity: An Acausal Connecting Principle. Princeton, New Jersey: Princeton University Press. p. 22. ISBN 978-0-691-15050-5.
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