. Annals of the Entomological Society of America. Entomology. 78 Annals Entomological Society of Ainerica [Vol. II, required for it to overcome a most serious outbreak of Toxoptera and thus save from destruction vast areas of growing grain. The species winters over in the fields in the bodies of its host. In many cases this hibernation is passed as nearly or quite fully developed adults, ready to emerge when the tem- perature rises to the neighborhood of 56° and continues for a sufficient length of time, and where they have been prevented from emerging the pre- vious fall, on account of the ad
. Annals of the Entomological Society of America. Entomology. 78 Annals Entomological Society of Ainerica [Vol. II, required for it to overcome a most serious outbreak of Toxoptera and thus save from destruction vast areas of growing grain. The species winters over in the fields in the bodies of its host. In many cases this hibernation is passed as nearly or quite fully developed adults, ready to emerge when the tem- perature rises to the neighborhood of 56° and continues for a sufficient length of time, and where they have been prevented from emerging the pre- vious fall, on account of the advent of cold weather. This is clearly shown by the fact that Mr. E. O. G. Kelly found them in this condition at Leavenworth, Kansas, on November 13. From a lot of 50 parasitized Toxoptera that had been washed or rubbed off. Fig. 5.—-Lysiphlebus depositing its eggs in the body of a grain-aphis. Much enlarged (original.). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Entomological Society of America. [College Park, Md. , etc. ] : Entomological Society of America
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectentomology, bookyear1
