INSECTS INJURIOUS TO ORCHARD TREES 435 



insects are beautiful, clear-winged, steel-blue moths. The 

 abdomen of the female is marked by a conspicuous orange band, 

 that of the male by three or four much narrower stripes. 



The moths may sometimes be kept from laying their eggs 

 on the tree if the trunk is wrapped with some heavy paper 

 and the earth mounded up around the crown. Various re- 

 pellent or protective washes have been tried with but little 

 success. After the larvae have entered the tree they must be 

 dug out and destroyed. If the trees are well mounded up 



FIG. 208. Adults, male and female, California peach-tree borer, Sannl- 

 noidca opalcscens, (About natural size.) 



early in the spring it will greatly facilitate the work of "worm- 

 ing" early in the fall, for most of the young larvae will be above 

 the surface of the ground when the mounds are levelled. 



A closely related species known as the California peach-tree 

 borer, S. opalescens, occurring on the Pacific Coast, has habits 

 and a life history similar to the eastern species and yields to 

 the same methods of control. 



The Peach Twig-borer (.4 narsia lineatella). Early in the 

 spring many of the tender shoots on the peach trees will often 



