SOUTH DAKOTA 
Of the 12,772 specinenB collected in South Dakotn ahout U6 percent v;erc 
Melanoplus nexican-us . This species hatched out in 1933 in great nunlDers in idle ■ 
land, stuhhle, and pepporgrass prairie land adjncent to crops . One field of 
■untenanted reverted land averaged over 1,500 per square yard on 160 acres— enough 
hoppers to destroy all of the grain on I5 sections. Some of the peppergrass 
prairie had populations of o,000 per square yard. Such dense populations thin 
out to at least Uo to 50 V^'^' square yard "by the tine the hoppers are adult, chief- 
ly "by spreading. Most farmers are reluctant to poison hoppers on land "belonging 
to other people or on untenanted reverted land. They should realize that- hoppers 
do not respect property lines 02iy nore than they do property rights. Where such 
places are a nenance to rdjacent farms poisoning then off "before they get' into 
.the crops "becomes a ccnnunity problem. 
