. Annual report - Entomological Society of Ontario. Entomological Society of Ontario; Insect pests; Insects. 18 Dear Sir,— Mr. Bates is quite right in saying Doryphora will eat Solanum dulcamara and Datura stramonium ; they have preferred these to tomatoes in ray garden. A friend found them eating Hyoscyamiis. The present season seems exceedingly favourable to production of Nematus and other grubs destructive of the currants and gooseberries. H. H. Croft, Toronto, Ont. SOME OBSERVATIONS ON THE BACON BEETLE DERMESTES LARDARIUS. BY CAROLINE E. HEUSTIS, ST. JOHN, N. B. (From the Canadian Entomolo
. Annual report - Entomological Society of Ontario. Entomological Society of Ontario; Insect pests; Insects. 18 Dear Sir,— Mr. Bates is quite right in saying Doryphora will eat Solanum dulcamara and Datura stramonium ; they have preferred these to tomatoes in ray garden. A friend found them eating Hyoscyamiis. The present season seems exceedingly favourable to production of Nematus and other grubs destructive of the currants and gooseberries. H. H. Croft, Toronto, Ont. SOME OBSERVATIONS ON THE BACON BEETLE DERMESTES LARDARIUS. BY CAROLINE E. HEUSTIS, ST. JOHN, N. B. (From the Canadian Entomologist.) Having read in the Report of the Entomological Society of Ontario for 1877 an article by Prof J. T. Bell, of Belleville, Ont., entitled " How to Destroy Cabinet Pests," I thought it might not be unprofitable to record my own observations on Dermestes Lardarius. In the accompanying figure 1, both beetle and larva are shown, magnified ; the hair lines placed by the side of each in- dicate the natural size. Early in the summer of 1876 I captured four beetles, three males and one female, and placed them in a glass jar with a piece of the meat on which I found them feeding. I observed the female deposit a number of eggs on the meat, but before- any were hatched I left home, and was absent about five weeks. On my return I found a large and flourishing colony of larv8e, most of them full grown. My object in rearing these insects was not to study their natural history, but to find out the best means to destroy them. I put a piece of camphor gum in the glass as a first experi- ment. The effect on them was very slight. They appeared a little uneasy at first, but in a minute or so commenced crawling over the camphor quite unconcerned. I had heard of a clothier who rolled tallow candles up in webs of woollen cloth to preserve them from the attacks of the " moths," and I resolved to try its efi'ects on Dermestes larvas. With this view I put a small piece of tall
Size: 2312px × 1081px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, bookdecade1870, booksubjectinsects, bookyear1872
