. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. empty pupa skin; c, adi in-aphis: a, Lar plant-lice. Little is known of the life histories of these insects as very few careful rearings have been made. Syrpkus an s Wied. fig. 43) and Eupt s O. S. (fig. 44) were by far the most numerous syrphids in the grain fields in the Southwest in 1907. A field at Kingfisher, in April, I! literally swarmed with them; 20 or more could be taken with each sweep of an insect net. A curious fact with reference to their occur- rence in such abundance in this field, however,
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. empty pupa skin; c, adi in-aphis: a, Lar plant-lice. Little is known of the life histories of these insects as very few careful rearings have been made. Syrpkus an s Wied. fig. 43) and Eupt s O. S. (fig. 44) were by far the most numerous syrphids in the grain fields in the Southwest in 1907. A field at Kingfisher, in April, I! literally swarmed with them; 20 or more could be taken with each sweep of an insect net. A curious fact with reference to their occur- rence in such abundance in this field, however, was that Toxoptera was not present there in destruc- tive abundance, while the adjoin- ing field was suiTering greatly from their attack, though, curiously enough, the syrphid flies did n>t appear to be so plentiful there. These two species were present, apparently. over the entire south- western area that suffered greatly from Toxoptera attack in 1007. Syrphusamericanus was reared also from Toxoptera material sent in by Mr. E. C. Haynsworth from Sumter. S. C. Prof. J. M. Aldrich states in his catalogue of North American Diptera that he reared Evpeode* oris from A. I Is at* rue at Moscow, Idaho. Dr. C. V. Riley states,. v South African lady-beetle, Adalia flam- nutertlata, which with its larva attacks the spring grain-aphis in the Orange free State, South Africa. 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 United States. Bureau of Entomology. Washington : G. P. O.
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