.1 



and split down the middle line : the larva if present will be found 

 as a small white grid) (see Fig. i. b), in the straw, probably near 

 a node. Or, if the examination is ma le near the time of the 

 emergence of the adult, the pupa will he found snugly lying in 

 its cell ( see Fig. i. b). But if the discovery is made only in the 

 growing wheat, no immediate remedy is at hand. It is, however, 

 in the fall and winter that the importance of a careful search for 

 the insect becomes apparent, as at these times effective means 

 are available for combating the insect pest. Straws from the 

 stubble and from the stack should be carefully inspected. In 

 fall and winter, as already indicated in the brief life history 

 sketch, the insect is in the pupal stage, and will be found in the 

 straws as shown in the plate. The pupa rests in its hidden retreat 

 awaiting the warm days of early spring to emerge and oviposit 

 on the growing wheat. The present, then, is the time for action. 

 The stubble of all infested fields should be destroyed by burning 

 or otherwise, and all remnants of straw stacks in which the pest 

 has been found should be burned before March i or immediately 

 thereafter. By reference to the plate it will be noted that the 

 adult Isotoma is wingless, it has been found that only about five 

 out of ever)- one hundred individuals possess wings. This is an 

 additional factor in making possible a successful war upon the 

 pest. As the adults emerge from stack or stubble in the spring 

 they must of necessity have a very restricted range within the 

 limits of which the eggs for the next brood will be laid. Thus 

 an additional incentive to individual work on the part of the 

 farmer is created, as it lies within the power of each farmer to 

 almost insure the riddance of the pest from his wheat field. 

 Simple rotation of crops is evidently an effective measure, as. if 

 the emerging adults from last year's straw find no growing wheat 

 in which to rear their broods the insect will be starved out. 



As previously mentioned the Wheat straw Worm was espec 

 faily prevalent last year in Central and Western Kansas. 

 Farmers in the wheat counties of this portion of the state should 

 immediately inspect the straws in their stacks, and if the insect 

 is found should burn all left over straw. because of the main 

 reports received last year from Barton, Russell. Osborne, Rice, 

 Ellsworth, Rush and Lincoln counties, it is undoubtedl) advis- 



