INSECT ENEMIES OF WESTERN FORESTS 



43 



prevention of damage to ornamentals. Several western species of 

 these moths have been described. 



The cypress tip moth {Argyresthia cupressella Wlsm.) attacks 

 Monterey and other species of cypress in central California. Two 

 related species, A. trifaciae Braun and A. franciscella Busck, are 



Figure 19. — The cypress webber (Epinotia suhviridis) : A, Adult moth, X 3.25 ; B, eggs, 

 greatly enlarged ; C, larvae, X 10 ; D, pupa, X 10 ; i?, cocoons on twig, natural size, 

 and abdominal tip of pupa. (Drawings by Edmonston. ) 



often associated with the cedar tip moths and cause similar damage. 

 The incense cedar tip moths {Argyresthia libocedrella Busck and 

 A. arceuthohieUa Busck) attack the twigs and leaflets of incense 

 cedar in Oregon. 



The cypress webber {Epinotia suhmridis Hein.) (fig. 19) in the 

 caterpillar stage burrows through cypress leaflets, leaving a webby 

 trail, and then ties bits of gnawed twigs and leaves together to form 



