SPRING PRACTICE IN ECONOMIC. ZOOLOGY. 63 



The Peach Borer, Sanninoidea exitiosa, is the most universally 

 distributed of peach pests. It may generally be found around the 

 foot of the tree, slightly beneath the surface of the soil, burrowing 

 beneath the bark, thereby causing a copious exudation of gum. Go 

 over the trees as early as convenient in the spring, dig the worms 

 out with a knife and kill them. Some prefer to use scalding water 

 for destroying them in order to prevent mutilation of the bark. An 

 emulsion of chloronaptholeum or of creolin, one part of naptholeum 

 to one hundred and fifty parts of water, would probably give as good 

 results as scalding water. 



The Peach Twig Borer, Anarsia lineatella^ is best destroyed by 

 kerosene emulsion, diluted with seven parts of water, applied in early 

 springor in winter. The caterpillars spend the winter in minute, silk. 

 Uned tunnels in the thickened, spongy bark in the axils of the small 

 twigs. Their presence here is disclosed by little mounds of sawdust 

 or finely ground bark. They begin to migrate to the twigs about the 

 time the buds are swelling in the spring, and in some instances have 

 been destroyed by a spray of lime-sulfur wash during the migrating 

 period. Most of the damage is done in late April or early May, by 

 the larvae tunneling into the new wood, thus killing the terminal 

 growth. No remedy avails at this period. 



Peach Aphids may be treated like apple aphids, page 41. The 

 Black Peach Aphis, Afhis persicae-niger, feeds on both the foliage 

 and the roots like the woolly plant louse of the apple. All trees re- 

 ceived from the nursery should be closely inspected for the pest, 

 since it is a very deceptive and dangerous one. The root form is 

 dark brownish-black, polished and shiny. The form which lives 

 above ground is black, with under side of body dark brown. If there 

 is any possibility that the louse is present, wash the soil from the 

 roots, immerse them in tobacco decoction (Winter Manual p. 13) 

 and, before planting out, puddle the roots in tobacco-impregnated 

 mud as discussed for apple-root louse, page 42. 



Consult the apple section for information about these: 



Leaf Crumpler, Mineola indigenella. See page 42. 



Climbing Cittworms, Mamestra subjuncta, et al. See page 43. 



Oblique Banbed Leaf Roller, Archtps rosaceana. See page 43. 



MAY. 

 The following which attack peach have been treated in the 



apple section: . 



Apple Tent Caterpillar, Malacosoma americana. See page 46. 



Forest Tent Caterpillar, Malacosoma disstria. See page 46. 



Plum Curculio, Conotrachelus nenuphar, page 50, also plum 

 section, page 58. 



