Chinch bugs are distributed over a large portion of the eastern half of South Dakota, but it is only during exceptional years that the bugs increase in such large numbers as to become seriously harmful. During the past 14 years in which the writer has been a resident of South Dakota, chinch bugs have been troublesome only during the years 1921 and 1922. The area that was overrun by the pest during these two years included portions of Bon Homme, Douglas and Charles Mix counties. Before the bugs went into hibernation in the fall of the year 1922, there was a dissemination of the pest over a large area. As a consequence, not only is there danger of a chinch bug outbreak in Bon Homme, Douglas and Charles Mix counties during the year 1923, but Gregory, Brule, Aurora, Davison, Hanson and Hutchinson, and possibly other neighboring counties, may also experience damages because of the bugs.
South Dakota Experiment Station, South Dakota State College of Agriculture and Mechanical Arts
Severin, H.C., "The Chinch Bug" (1923). Research Bulletins of the South Dakota Agricultural Experiment Station (1887-2011). 202.