Melolontha melolontha 4 stage larvae
|Copyright: Ungureanu Liviu (Apashu)
|Date Taken: 2010-02-23|
|Exposure: f/5.6, 1/125 seconds|
|More Photo Info: [view]|
|Photo Version: Original Version|
|Date Submitted: 2010-03-01 0:56|
|[Note Guidelines] Photographer's Note|
|Adults appear at the end of April or in May and live only for about five to seven weeks. After about two weeks, the female begins laying eggs, which she buries about 10 to 20 cm deep in the earth. She may do this several times until she has laid between 60 and 80 eggs. The common cockchafer lays its eggs in fields, whereas the Forest Cockchafer stays in the vicinity of the trees. The preferred food for adults is oak leaves, but they will also feed on conifer needles.|
The larvae, known as "white grubs" or "chafer grubs", hatch after some four to six weeks. They feed on plant roots, for instance potato roots. The grubs develop in the earth for some three to four years, in colder climates even five years, and grow continually to a size of about 4–5 cm, before they pupate in early autumn and develop into a cockchafer in some six weeks.
The cockchafer overwinters in the earth at depths between 20 and 100 cm. They work their way to the surface only in spring.
Because of their long development time as larvae, cockchafers appear in a cycle of every three or four years; the years vary from region to region. There is a larger cycle of some 30 years superimposed, in which they occur (or rather, used to occur) in unusually high numbers!
This one is on the four stage of transformations, that result that in may or april it will became an adult...
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This is very nice picture of beetle larva, but in my opinion it is not a Melolontha melolontha (which you can see here) or even any Scarabaeidae beetles. I think it is some Cerambycidae beetle larva.
All the best,