Annual report of the Agricultural Experiment Station of the University of Minnesota . Fig. 24.—A frog eating young grasshoppers in stubble field. Original. day early in the season. Among the numerous foes to Grasshop- 28 INSECTS INJURIOUS IN 1902. pers can be mentioned the Red Mite which fastens itself on theirwings and other parts of the body (see Fig. 4 of colored plate),predatory Beetles, Robber Flies, (see Fig. 21) Tachina parasites,Flesh Flies and Bee Flies, and, as an internal parasite, Gordius orthe Hair Snake, which popular belief used to regard as a meta-morphosed horse hair. The writ
Annual report of the Agricultural Experiment Station of the University of Minnesota . Fig. 24.—A frog eating young grasshoppers in stubble field. Original. day early in the season. Among the numerous foes to Grasshop- 28 INSECTS INJURIOUS IN 1902. pers can be mentioned the Red Mite which fastens itself on theirwings and other parts of the body (see Fig. 4 of colored plate),predatory Beetles, Robber Flies, (see Fig. 21) Tachina parasites,Flesh Flies and Bee Flies, and, as an internal parasite, Gordius orthe Hair Snake, which popular belief used to regard as a meta-morphosed horse hair. The writer has seen a specimen of Gordiusin California emerging from a large Locust common in that Fig. 25.—English sparrows catching grasshoppers in the streets of Crookston. Original. Turning to vertebrate enemies we note poultry, Prairie Chick-ens, Hawks, Black Birds, Crows, Meadow-larks (the writer ob-served an Oriole helping himself this summer) some Gulls andI erns, Frogs, Snakes and Skunks. I have even observed themuch despised English Sparrow catching quantities of them inthe streets of Crookston. INSECTS INJURIOUS IN 1902. 29 Natural enemies, however, are not sufficient and farmersshould know the best methods of combating a pest which is attimes so serious. PROTECTIVE AND REMEDIAL MEASURES. Fall plowing of stubble or early plowing of the same in thespring before May 10th is the safest, best, and simplest methodknown to prevent the young hoppers from issuing from the eggcases. Co-operation in this, as well as in the treatment of all insectpests is absolutely essential. If one farmer plows and his neigh-bor does not, the work of the first is thrown away. Young hoppers whil
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