282 



THE STUDY OF INSECTS. 



trees to oviposit as do the females of the Canker-worms. 

 The female is represented in the lower left-hand part of the 

 figure. She is grayish in color, with two black spots on the 

 back of each segment except the last, which has only one. 

 The male has buff fore wings, with a central spot and a band 

 beyond the middle, while the hind wings are much lighter. 

 This insect can be combated by the same methods as are 

 used against canker-worms. 



Family HYDRIOMENIDS (Hyd-ri-o-men'i-dae). 

 The Hydriomenids (Hyd-ri-o-me'nids). 



The Hydriomenids are easily recognized by the structure 

 of their wings. In the fore wings the branches of radius 

 anastomose so as to form 

 one or two accessory cells; 

 and in the hind wings 

 veins II and III coalesce 

 along the second fourth 

 of the discal cell, the co- 

 alescence extending to or 

 beyond the middle of the 



F.6- 334- Wings of Eudul, mendica. F,G. 335-Wings of Dyifteri* abo, tivaHa. 



