•_>o 



Ohio, for example, (wentv acres out of thirty of a timothy nu\\(U)\v were 

 so injured by this cutworm that tlie grass became dry enoiiuh to burn. 



In mixed fields of timothy and clover 

 I hey have completely destroyed the 

 tinu)thy. leavins>; the clover unharmed. 

 In Indiana a large area in each of three 

 timothy fields, amounting to fifty acres 

 in all. was totally destroyed. There was 

 an evident migration of the cutworms in 



Fic;. 2. The Glassv Cutworm (Ila- . , , , , • , • , 



denaderostatrix't. t\du\t. Natural size. tluS CaSe OUt Ot the lOW Liuds Ul whlch 



they originated. They have destroyed lawns in Fargo, North Dakota, 

 and in Glencoe, near Chicago. In Canada it was found necessary to 

 plow up several fields of winter wheat which were destroyed by them in 

 spring, and fields of oats were seriously injured and replanted. A piece 

 of sod lantl in Ohio batlly infested l\v these cutworms was broken up in 

 winter and planted to seedling peaches, but in the following spring 

 thirty-five per cent, of these yi)ung trees were cut olT two or three inches 

 abt)ve the roots. Lugger says that they are very destructive to straw- 

 berry plants in Miimesota. cutting away the crown and causing the plant 

 to wilt away. They have also injured strawberry plants in the Southern 

 States and garden vegetables in INIississippi. 



Besides these farm crops they may feed upon almost any kind of 

 herbaceous plants, including cabbages, beans, radishes. hollyluK'ks, and 

 lettuce. They evidently develo]) maiidy in grass-lands, especially in 

 low gromid, and do their most serious injury to crops following u)ion 

 grass. 



The species is found in the Initetl States from the Atlantic to the 

 Pacific, and also in Canada antl in l^urope. It is least abundant in the 

 extreme South. 



It appears to be single-brooded. The eggs are laid in the latter part 

 of the season, mostly, according to Gillette, after August 1, and hatch 

 before cold weather, the larva^ making their destructive attack in the 

 latitude of central Illinois in the following May and the first half of Jun^. 

 They change to the i)upa in the ground in June or the early part of July, 

 occasionally as late as August. The moths (Fig. 2) begin to appear in 

 June, become very abundant in August, and may remain until October. 

 Carman found, November 25, a single cutworm of this species, which 

 reached the moth stage the following April. 



From this it follows that grass-lands must be jilowed in August if 

 they are to remain free from the eggs of this cutworm moth, and that 

 corn planted late in June will probably remain uninjured by the cut- 

 worm itself. 



