Ecological Study of Hemiptera of Cranberry Lake Region 19 



in September, was confined entirely to the summer months of 

 June, July and August. These months include (see table) the 

 greatest period of insect activity and for many species practically 

 the entire time for the development of the nymphal stages. The 

 daily range of temperature is also quite marked. The nights are 

 generally cool and, consequently, the insects are not very active 

 during the latter part of the afternoon, early morning and night. 

 As a result of the late spring and the unusually heavy rainfall 

 during July (7.35 inches) the development of the immature stages 

 v^as somewhat retarded and adults of many species were not taken 

 until the latter part of the summer. 



Meteorological Table — 1920 



THE HEMIPTEROUS FAUNA 

 Forest Associations 



Primitive Forest: The Hemiptera of the deep woods associa- 

 tion are limited in number of species, but consist of rather dis- 

 tinctive forms and some of them quite closely restricted to such 



