INSECTS INJURIOUS TO THE CRANBEKRY. 



113 



APPEXDIX. 



INSECTS IXJURIOUS TO THE CRAXBERRY. 



Report of sVilUam C. Fish to the Cape Cod Cranberry 

 Growers' Association in 1869. 



It will be necessary for us to understand, at the outset, 

 the different stages through which nearly all true insects 

 pass before arriving at maturity. As an example, we will 

 first consider the life of the 



Vine Worm. 



These Avorms hatch somewhere about the 20th of May, 

 from eggs that have remamed upon the vines all winter. 

 These eggs are a flat, circular scale, of a honey-yellow 

 color, and measure about 0.3 of an inch. Just before it 

 is time for the egg to hatch, the black head of the young 

 worm can be seen through the skin with the naked eye. 



When hatched, the young worm immediately finds its 

 way to the end of the young shoot, and commences to 

 feed upon the tenderest leaves, drawing some of them to- 

 gether with its w eb for shelter. It is, at this time, of a 

 pale yellow color, with a black head. In this way they 

 continue to work, drawing more leaves together, and 

 feeding first on the tenderest parts, and then upon the 

 older leaves. When very numerous, by the time they 

 are fiill grown, they will have eaten most of the leaves 

 and tender shoots, leaving very little except dry stems. 



They attain their full size in about two weeks from 

 hatching, and are then about 0.45 of an inch in length, 

 having become of a dull yellow-green, with a black head. 



It now prepares to pass from the larva to the pupa 

 stage of existence by spinning a slight cocoon among the 



