Reports on the damage by destructive locusts during the season of 1891
Abstract
Sir : I beg to submit herewith a report of my observations on the destructive lo- custs of the country during the current year, a work which has engaged, as you already know, the greater portion of my time during the past summer.While oc- cupied with these investigations portions of Colorado, Wyoming, the Dakotas, Min- nesota, Montana, Idaho, and Utah, along with the Eed River Valley of Manitoba, were visited by me.In addition to the regions personally examined, I am also ena- bled to include reports on other districts based upon reports and specimens obtained from friends who themselves had examined into the conditions of these affairs.It will not seem surprising, therefore, if the greater portion of my report relates to this particular group of insects.Since there have been a number of species of these destructive locusts concerned in the injuries inflicted in various portions of the country during the season, I have thought it best not only to mention all of these, but also to include such others as have been recorded as pests during former years, as well as those that are liable in the future to become injurious over local areas.this insect also occurred in destructive numbers in several limited lo- calities of southeastern Wyoming.At about the same time that I was investigating the northern border of the region occupied by the Long-winged Locust.Messrs. Snow and Popenoe, of Kansas, were studying it along its southern limits, where they found the insect in even much greater numbers than I did along its northern limits of abundance.As those gentlemen have made a much more thorough investigation of the pest than I have, and have written a rather full report of the results of their labors, the readers are referred to that paper if they desire to obtain the full particulars.The description, habits, distribution, and life-history of this species will be given farther on in this report, in connection with like particu- lars in reference to other species of these destructive insects which oc- cur in ^Nbrth America north of the Mexican boundary.
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