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BULLETIN 566, U. S. DEPARTMENT OF AGRICULTURE. 



gardeners of the various estates. In almost every case they are men 

 of education and trained powers of observation. 



1911. — Mr. T. Suffern Tailer owns the estate where the first ear- 

 wigs were noted. His gardener believes that a very few were present 

 in 1911. 



1912. — Mr. Tailer and his gardener state definitely that earwigs 

 were present in 1912. Specimens were sent to Washington, D. C, 

 by Dr. A. E. Stene, of the Rhode Island State College. 



1913. — The infestation in 1913 had spread to adjoining estates. 

 Large numbers were found on Mr. Tailer's estate and his men at- 

 tempted certain control measures. 



Fig. 7. — A typical congregating place for adult earwigs. (Original.) 



191Jf.. — About 1 square mile was heavily infested in 1911. Mr. 

 Richard Gardener, of Newport, wrote to the Bureau of Entomology 

 at Washington, asking for information regarding the insect. 



1915. — The infestation during 1915 was so heavy that letters re- 

 questing information about methods of control were sent to Wash- 

 ington and to the State college at Kingston, R. I. A careful scout- 

 ing conducted by the writer showed that about 9 square miles were 

 heavily infested. This area is bounded on three sides bj^ water. On 

 the fourth side, 2 miles of territory in addition to that infested in 

 1915 had small scattered colonies. One isolated colony was located 



