EXTERMINATING NOXIOUS INSECTS. 



261 



Parent bug of the 

 Rouud - headed 

 Borer. 



The Round-headed Borer (Sa- Fig. 99. Fig.ioo. 



per da bivittata), Fig. 99, is often 

 found in any part of the body 

 of an apple-tree, although the 

 parent-bug (Fig. 100) will seek 

 the tender bark at the collar of 

 the tree first, as a suitable place 

 for depositing its eggs. Some- 

 times both species dwell togeth- 

 er in the same orchard and on 

 the same tree; often, however, Borer> 

 the Round-headed Borer will be found mainly to infest a cer- 

 tain orchard, while another orchard, not a quarter of a mile 

 off, will be exclusively attacked by the Flat-headed Borer. 



It is interesting to dwell on the habits of such depreda- 

 tors. But we must cut every thing short for the sake of 

 giving practical directions for preventing the ravages of 

 these pests. Red-headed Woodpeckers will destroy every 

 borer that can be found. Hence, let such birds 

 be encouraged to frequent apple-orchards. Then 

 let the bug-traps be kept in running order, to 

 destroy the beetles, the moth-millers, and the 

 flies, when they are about to deposit their 

 eggs or spin cocoons. After borers have really 

 bored deeply into a tree, there is no other prac- 

 ticable way to dispose of them than to cut 

 them out with a joiner's gouge and mallet, and 

 cover the wounds well with grafting-wax. 



The Forest-tent Caterpillar (Clisiocampa syl- 

 vatica). This caterpillar (Fig. 101) is frequent- 

 ly confounded with the " American Tent-cater- 

 pillar" (Clisiocampa Americana), Fig. 95, p. 

 253. Although its ravages are usually confined 



Forest Tent- , - . 



caterpillar, to the torest and groves, the depredators otten 



Fig. 



