29 



CLIMATE AND INSECTS. 

 T. C, Chapais, St. Denis-en-bas, Que. 



SUMMARY: — Influence of Climate on Insects, Those Insects affected by 

 Climate in Eastern Quebec, e.g.. Apple-tree Tent Caterpillar, Forest 

 Tent Caterpillar, Striped Cucumber Beetle, Potato Beetle, Striped 

 Blister Beetle, White Marked Tussock Moth, and the Pea Aphis. 



Influence of Climate: 



' ' The Quebec Society for the Protection of Plants from either Insects 

 or Fungous Pests" has as its object the study of the economic and noxious 

 insects and fungi. One of the principal points to be observed about these 

 is the effect that the climate of our locality may have on their life, develop- 

 ment or destruction. I have made a special study of this phase of the 

 subject in the Eastern part of the Province of Quebec where I live, and I 

 wish to-day to present to the Convention the few notes I have made from 

 my observations of their behaviour during the past thirty years. 



List of Insects : 



Appended is a list of the insects which I have observed as being 

 particularly influenced by the varying climatic conditions of Eastern 

 Quebec. I give the Scientific, Common English and French names to 

 facilitate the reader in identifying them. 



Latin 



Anasa triptis. 

 Clisiocampa amerioana. 



do Hvlvatica. 



Diabrotioa vittata. 

 Doryphora decern lineata. 



Epicauta vittata. 

 Hemerocampa (Orgyia') 



leucostigma. 

 Nectarophora destructor. 



English. 



Squanli Bug. 



Apple tree tent Ciiterpillar. 

 Forest tent Caterpillar. 

 Striped Cucumber beetle. 

 Potato beetle. 



Striped blister beetle. 



White Tussock Moth. 

 Destructive Pea Aphis. 



French. 



Pnnaise des coujges. 

 Chenille fi tentedu pommier. 



do des bois. 



Barbea'i barredu'^oncombre. 

 Chrysonile de la pomme de 



terre. 

 Cantharide barr^e. 



Houppe a taches blanches. 

 Pnceron deetructeur des pois. 



Anasa tristis. — We have had in our district three or four invasions of 

 this insect which attacks pumpkins and squash. A specially bad attack 

 occurred in 1886. This insect does not seem to occur for two consecutive 

 years. If present one season it is usually absent the following season. 



