Economic entomology for the farmer Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; economicentomolo00smit Year: 1906 THE INSECT WORLD. 315 and the Western plains generally. This caterpillar, at first sight, resembles one of the Noctuids very closely, and is of a beautilul, quite unusual, bluish tint. The moth expands nearly two inches, and is, perhaps, the largest of those belonging here. It has the peculiar habit of laying its eggs one upon the other in a pile which mimics the spines on the cactus leaves ; so, unless c
Economic entomology for the farmer Economic entomology for the farmer and the fruit grower, and for use as a text-book in agricultural schools and colleges; economicentomolo00smit Year: 1906 THE INSECT WORLD. 315 and the Western plains generally. This caterpillar, at first sight, resembles one of the Noctuids very closely, and is of a beautilul, quite unusual, bluish tint. The moth expands nearly two inches, and is, perhaps, the largest of those belonging here. It has the peculiar habit of laying its eggs one upon the other in a pile which mimics the spines on the cactus leaves ; so, unless carefully sought for, they are easily overlooked. We find also in this group of variable habits a species that is carnivorous, Lcctilia Fig. 359. An egg-stack o{ Mt'/iUu a prude iiialis.—S'm^\it eggs shown al a. coccidivora, which, as its name indicates, feeds upon scale insects. Unfortunately, it is altogether too rare to be of any practical use, and is simply a curiosity, the carnivorous tendency in the Lepi- doptera being extremely rare. Ephestia kuhniella is another troublesome species, commonly known as the 'Mediterranean flour-moth.' It is sometimes abundant in barns and mills, and, especially in the latter, may do much Injury. Great complaint has been made during the few years last past, the insects seeming to become more abundant and to ciwer an increasing portion of our territory. Cleanliness, of course, is primarily to be enforced ; but where they are abundant enough to make it important, the insects can be cleared out by using bisulphide of carbon. All the rooms should be tightly closed overnight, and enough bisulphide evaporated to fill every nook and cranny with the poisonous fumes. In a badly infested establishment a second application may be neces- sary in some cases, but in most instances one has proved effectual.
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