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see June beetleJune beetle
or May beetle,
a blackish or mahogany-colored beetle of the scarab beetle family, widely distributed in North America and especially abundant in the NE United States and the adjacent parts of Canada.
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(may beetle, or June beetle), the common name for two species of beetles of the genus Melolontha, family Scarabaeidae; a plant pest. Its length is 22-29 mm. The body is black; the elytra are reddish brown and covered with white hairs. The larvae of both species of cockchafers are yellowish white (length up to 60 mm) and practically indistinguishable. M. hippocastani is distributed in Europe and Asia; it is found everywhere in the European USSR (except the Far North) and in Siberia as far as Transbaikalia. M. melolontha is found only in Europe; it is in the west and south of the European USSR.

Cockchafers cause considerable damage to young fruit trees, berry bushes, and timber, as well as in truck gardening and field crops. The adult beetles feed on the leaves of trees, predominantly birch, maple, and oak; in years of mass flight they often completely eat off the leaves, causing severe damage to plantings. The flight of the beetles begins in May and in the south, in late April. Ten to 20 days after the beginning of the flight, mating takes place, followed by oviposition. The female deposits at different times a total of 50-70 eggs in the soil and then dies. Cockchafers cause the greatest damage in the larval stage, feeding at first on the roots of herbaceous plants and humus and later on the roots of trees. The development of the larvae in the soil lasts four to five years. Young pines suffer the greatest damage from the larvae of cockchafers. Seedlings and slips damaged by cockchafer larvae quickly die or are retarded in development.

Control measures include the cultivation of forests to ensure growth of healthy and resistant plantings (preparation of the soil with annual or biennial fallowing, proper selection of tree and shrub varieties, and the use of high-quality materials in sowing and transplanting), treatment of plantings with insecticides during the flight of the cockchafers, and application of insecticides to the soil or treatment of the roots with insecticides before transplanting to kill the larvae.


Lesnaia entomologiia. Moscow, 1965.



any of various Old World scarabaeid beetles, esp Melolontha melolontha of Europe, whose larvae feed on crops and grasses
References in periodicals archive ?
The cockchafer, or may bug, is also known as a billy witch or sprang beetle.
Eventually,after much prising and cutting, the tub was opened to reveal one very fed up cockchafer, and I explained to the lady that it wasn't a Colorado beetle,but a May bug - although she didn't seem too convinced,and I said that we should release it to let it continue its strange nightly business,after which I handed the obviously disappointed lady her margarine tub back.
Each May, the arrival of the May bugs brings this incident to mind, and I often think of a well-known television commercial as I try to picture the lady with the empty tub in her hand exclaiming: ``I can't believe it's not a Colorado beetle!'' I think at this point it would be expedient if I gave a brief description of the Colorado beetle - just in case - so to speak.
Incidentally, the main predator of the adult beetle is the little owl, which seems to gear its own breeding season to the availability of the May bugs. Many years ago, we had a tame little owl living in the garden,and one could always find him each evening on the ground beneath the security light crunching cock chafers in the manner of Gary Lineker crunching a well- known brand of crisps.
Well, the May Bug exhibits a trait that evolution would, if it did exist, have got rid of millennia ago.
We traced it to an influx of May Bugs. These are insects roughly the size and build of a half-brick.
A neighbour has told me they are the larvae of May bugs. What do you think?
ADRIENNE SAYS: May bugs or cock chafers are a species of beetle that live in the soil.