INSECTS INFHSTING THE WILLOW. 



CHAP. 



The Weeping Willow Borer (S'iapteron ro- 



binite) 154 



The Willow Scale {Aitpidiotus eo>irexMJs)...155 

 The San Bernardino Willow Scale (Anpidl- 

 otus orthololmx) 156 



The following insects also infest the Willow; 

 The Legged Locust Borer {Xijhiitiis robinits). 

 The Greedy Scale {Aspidiotua rapax). 

 The Steel-blue Flea-beetle {Halliea chalybea). 



chaptp:r CUV. 



Weeping Willow Borer. (Cal.) 



( ISciojitrron robiniii. — Edwards.) 



Order, LEPiDorxEKA ; Family, ^Egerid^. 



[A yellowish-white sixteen-Iegged larva, ahout one inch in 

 length, boring into the \vood of the weeping willow, locust and 

 Cottonwood.] 



In September, 1882, I was requested to examine a number 

 of weeping willows planted for ornamental purposes near a 

 residence. I found them so infested by the larva (Fig. 230, 

 Plate 3,) of a moth that I recommended they be cut down^ 

 which w\as immediately done. The Avood of the stems was 

 thoroughly burroAvcd. I found a number of larva?, and one 

 pupa. On the 30th of September the perfect insect emerged 

 frSm the pupa. At the present time, June 9th, one of the 

 larva^ found is spinning a cocoon; it is evidently about to 

 uuil('r,u(j its changes. The perfect insect {Fig. 231, Plate 3,) is 

 al)out nine lines long ; spread of wings, about one inch and 

 two lines ; color, head dark-brown ; palpi, dark-orange ; anten- 

 na', yellowish-red ; thorax, dark brown, with a narrow yellow 

 marginal line around the u})iK'r surface ; tirst segment of abdo- 

 men, dark l)rown ; second segment, yellow ; third and fourth 

 segments, dark Itrown : all the segments posterior to the fourth 



