892 CLOVER SEED CATERPILLAR. 



This is an unwelcome fact, and explains the rapid distribution of 

 these insects. 



The only remedy suggested is deep plowing when the larvae 

 are yet only partly grown. It has been suggested that abandon- 

 ing clover for a time might be wise. That this will suffice is 

 hardly to be expected. There is enough wild clover to prevent 

 the extermination or any great diminution of these insects. We 

 can hope more from parasites. Already Mr. Howard finds Eu- 

 yrtoma f unebris and Platygaster error engaged in this good work. 

 Success to them, and may their tribe increase. 



If seed is found stocked with the larvae it should be put 

 into a close vessel, as a jug or barrel, and bisulphide of carbon 

 added. This will kill all the larvae post haste. Even an open 

 barrel, water tight, may be used by placing a buffalo robe, or 

 other air-tight cover, over it. The fact that this insect is as far 

 West as Michigan, and possibly as far as Illinois, makes it a mat- 

 ter of general interest. In the future, clover seed will be valu- 

 able. 



Grapholitha interstinctana, Clem. Cloyer-seed Cater- 

 pillar. 



Order Lepidoptera. Family Tortricidae. 

 Comstock, Rept. Comm. Agr. 1880, p. 254. 

 Clemens, Proceed. Acad. Nat. Sci. PhU. 1860, p. 351. 

 Grote, Bull. Buffalo Soc. Vol. I., p. 92. 



These caterpillars are also quite widely distributed. Grote and 

 Comstock have taken them in New York, Grote in Pennsylva- 

 nia, Comstock in Washington, and I have found them quite com- 

 mon in Michigan. A single larva feeds on several and often all 

 the seeds of a single head of clover. Sometimes I would find 

 two larvas in a single head. The insect was quite common about 

 Lansing last summer 1885 



The larvae are dirty white, often greenish, 8mm long, and 

 spin white cocoons in the clover heads. The bodies bear many 

 white hairs. 



