. Bulletin of the Department of Agriculture. Agriculture. were collected in Ontario, Canada. There are specimens in tlie Harris collection of the Boston Society of Natural History bearing the label Isosoma tritici that were collected in Virginia in 1852. There are also speci- mens of tritici in the same lot. As late as 1892 F. M. Webster (13) stated that— He had not reared the depredator, and though in many respects the attack seemed to agree with that of Isosoma hordei, as de- scribed by Harris and Fitch, yet in many other features it appeared different. In all cases—and he had ex- amine
. Bulletin of the Department of Agriculture. Agriculture. were collected in Ontario, Canada. There are specimens in tlie Harris collection of the Boston Society of Natural History bearing the label Isosoma tritici that were collected in Virginia in 1852. There are also speci- mens of tritici in the same lot. As late as 1892 F. M. Webster (13) stated that— He had not reared the depredator, and though in many respects the attack seemed to agree with that of Isosoma hordei, as de- scribed by Harris and Fitch, yet in many other features it appeared different. In all cases—and he had ex- amined hundreds of wlieat straws from northern Ohio—the attack was al- ways above the upper joint. In two cases tlie upper joint and the one below had been attacked. From many thor- ough examinations he had found that the stem itself had not been eaten into, the cells being formed in the sheath, but owing to the pressure of the galls on the tender stem the latter had become distorted and the upper portion with the head, where one was produced, was greatly aborted. This so accurately de- scribes the injury that no doubt is left as to the identity of the insect in question or as to the fact that the species was very widespread and may have been a more serious pest in the early days in Michigan and northern Ohio than H. tritici. This is one of the reasons why entomologists had such controversies over tritici in the early days. There is not the slightest doubt in the 132861°—19 2. Pn;_ 7.—Eggs of species of Ilarmolita : a, II. hcspertis; I), H. tvcbstcrij c, II. aliomaciilataj d, H. grandls, form grandis, after oviposition ; e, H. yrandis, form f/raiHlis, just before hatching. All greatly 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. Dept. of Agriculture. [Washington
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