CUTWORM 



Fig. J. Showing osmeterium extruded at throat. 



ZEBRA CATERPILLAR 



Fig. K. Mature worm. (With permission of The MacMillan Company, from O'Kane, 



Injurious Insects, 1917, p. 171.) 



ATLANTIC CUTWORM 



Fig. L. Side and back views of the mature caterpillar. 



family and, except for differences in coloration, are much like garden cutworms. 

 Most of them are common pests of other crops. All but the false armyworm do 

 injury out of all proportion to the amount of their eating by cutting off flower 

 buds, flowers, small berries, or leaves and dropping them to the ground. The 

 green leaves fallen on the water in the bog ditches are often the first sign of 

 their work observed. The moths of all but the blossom worm ordinarily are night- 

 fliers and seldom seen. They measure an inch and a half or more across their 

 outspread wings. Their eggs (fig. 23) are round, slightly flattened, and marked 

 with many ridges radiating from the summit. The worms generally are severely 

 parasitized. 



These insects, except the false armyworm and blossom worm, rarely attack 

 cranberry bogs much unless the winter Howage has been held until late May or 

 later^''^ or late-spring and earlysummer grub flooding has been done. This may be 

 due to one or all of the following possible causes, given in the order of their 

 apparent probability's ; 



^" Reflooding for ten days or longer in late May sometimes has the same effect as very 

 late holding of the winter water. If the winter water is let off and the bog is flooded 

 again within a few days, the reflood should be regarded as a continuation of the winter 

 flood as far as its relations to these cutworms are concerned. 



^ Mass. Agr. Expt. Sta. Bui. 192:133, 1919. 



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