The spring grain-aphis(Toxoptera graminum Rond.) . Fig. 1.—The spring grain-aphis {Toxoptera graminum): a, winged migrant; 5, antennaof same, a, much enlarged ; b, highly magnified. (Original.) Rondani—probably from Bologna, Italy—in 1852, just thirty years priorto its discovery in America. Rondani states that in June the wingedmigrants were so abundant in the streets of Bologna as to cause theinhabitants great annoyance. The first time the insect came to noticein America, specimens were sent to the Department of Agriculture, butfrom what locality is not known. In June, 1884, it was found in s
The spring grain-aphis(Toxoptera graminum Rond.) . Fig. 1.—The spring grain-aphis {Toxoptera graminum): a, winged migrant; 5, antennaof same, a, much enlarged ; b, highly magnified. (Original.) Rondani—probably from Bologna, Italy—in 1852, just thirty years priorto its discovery in America. Rondani states that in June the wingedmigrants were so abundant in the streets of Bologna as to cause theinhabitants great annoyance. The first time the insect came to noticein America, specimens were sent to the Department of Agriculture, butfrom what locality is not known. In June, 1884, it was found in someabundance near Cabin John, Md., on wheat. A few days later, that is,about the first of July of that year, the writer found it infesting thewheat in his breeding cages at Oxford, Ind., where he was temporarilylocated as a field agent of this Department. xFor technical descriptions in English of the winged and wingless females ofthis grain-aphis see Pergande, Bui. 38, Div. Ent., U. S. Dept. Agric, p. 18, 1902. !t This pest seems to be rath
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