BULLETIN No. 179 NOVEMBER. 1917 



MASSACHISETTS 

 AGRICULTIRAL EXPERIMENT STATION 



The Greenhouse Red Spider 



attacking Cucumbers and 



Methods for its Control 



By STLART C. VINAL 



This Bulletin deals primarily with the development and dis- 

 covery of an efficient control for the common red spider attack- 

 ing cucumbers grown under glass; and secondarily with the 

 more biological phases, including distribution, importance, life 

 history and habits of this pest under greenhouse conditions. 



Requests for bulletins should be addressed to the 



Agricultural Experiment Station, 



Amherst, Mass. 



