. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 35 In a Chicago newspaper clipping- received in August mention is made of an "outbreak of sparrows" in one portion of Chicago where the}' were attracted in thousands by "grub ; It seems prob- able that they were also destroying fall army worms which were rav- aging the lawns in that citv at the time. September 1 ]Mr. Deering, of Chicago, wrote that the larv* had nearly all disappeared at that time, evidently having gone into the ground, and that birds, especially flickers, were very effi
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 35 In a Chicago newspaper clipping- received in August mention is made of an "outbreak of sparrows" in one portion of Chicago where the}' were attracted in thousands by "grub ; It seems prob- able that they were also destroying fall army worms which were rav- aging the lawns in that citv at the time. September 1 ]Mr. Deering, of Chicago, wrote that the larv* had nearly all disappeared at that time, evidently having gone into the ground, and that birds, especially flickers, were very efficacious in lessening the numbers of the pest. Among larvte that were received at this office from Rives, Md., were a few that were parasitized, as was shown by the eggs of a Tachinid liy present on their bodies on or near the thoracic segments. From these the adults were obtained from the 4th to the 9th of September, and were identified by Mr. Coquillett as Winthemia quadrlpusfulata Weid.,^ or red-tailed tachina fly, a species of wide distribution in the United States and Europe and a well-known parasite of this pest. During the fall of ISS-i at least 50 per cent of the larva? collected in Illinois showed the eggs of this parasite. This Tachina fly is figured herewith (fig. .5). Until comparatively recent times the Ta- china flies were generally believed to be among the most efi'ective destroyers of the common army worm and related species, but observations have now shown the fallacy of ,.âwinthemia u-pustuiata&y, ,1 . , T ,. ,,". ii ⢠1 T T-v TT J' I, with larva at left and puparium this belief. On this head Dr. Howard has at right-, fore part of the body of written-that he had searched for hours in army worm with xaehma eggs ^11 .,1 'i.!. i. attached belowâsomewhat en- grass fields overrun with army worms without ,^^g^^ ^^^^^^ comstock. ^ finding a single specimen of the "worm" which did not l)car upon its back the eggs of Whithenila ^
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