This section is from the book "A Dictionary Of Modern Gardening", by George William Johnson, David Landreth. Also available from Amazon: The Winter Harvest Handbook: Year Round Vegetable Production Using Deep Organic Techniques and Unheated Greenhouses.
Cetonia aurata. Green rose chafer, is most severely felt by the gardener when it attacks his strawberries, which it does in May or June. It is described by Mr. Curtis as being "one of our largest and most beautiful beetles, being of a bright burnished green, often reflecting a rich golden or copper tint; the horns are short with a small club. The scutel forms an elongated triangle; the wings are very long, brownish, and folded beneath the horny wing-cases, which have a few scattered white lines placed transversely, resembling cracks in the green epidermis; the under side is of a fine copper tint often inclining to rose colour. From its nestling and reposing in the flower of the rose, it is generally called the rose-chafer, but it is also attached to the white-thorn, candy-tuft, elder, mountain-ash, paeony and strawberry, the flowers of which it feeds upon. The female rose-chafers lay their eggs in the ground, and the larvae they produce are no doubt often confounded with those of the cockchafer (Melolontha vulgaris), being as large and very similar, and probably, under the name of "Leverblanc," they have contributed in no small degree to augment the ravages in the rose-tree nurseries of France. Although these larva are very much alike, it is not difficult to distinguish them, those of the rose-chafer being downy, and covered with transverse series of short hairs; and the feet are pointed;whereas, the grubs of the cock-chafer are naked, and the feet are blunt and rather dilated at the trips.
"These maggots are fat, the head-horns and six pectoral feet are rusty ochreous; the tips of the strong jaws are black, the extremity of the abdomen is of a pale ink colour from the food shining through the transparent skin; but in the rose-chafer there is a large horny bright rust-coloured spot on each side of the first thoracic segment. The simplest remedy is to collect the beetles, which are large and conspicuous, into bottles or cans of water, in the morning and evening, or in dull weather during the day, for they fly very well, when the sun shines, which renders it difficult to capture them unless a net be used: when the search is ended, the contents of the vessel should be emptied into boiling water." - Gard. Chron.
 
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