30 APPLE-TRUKK BUTRESTIS REMEDIES. 



thickly punctured, the punctures on the venter or hind part of the body open- 

 ing backwards. The last segment has an elevated line in the middle at its base, 

 and its apex is cut off by a straight line, in the middle of which is commonly 

 a small projecting tooth. The anterior thighs are remarkably large, from which 

 circumstance this species has received its name, and they have an angular pro- 

 jection on their inner sides, beyond the middle. The tibiaj or shanks of these 

 legs are slightly curved. 



The remedies for destroying this borer must necessarily be 

 much the same with those already stated for the common borer 

 or Striped Saperda. They consist essentially of three measures: 

 1st, coating or impregnating the bark with some substance repul- 

 sive to the insect; 2d, destroying the beetle by hand picking; 

 and 3d, destroying the larva by cutting into and extracting it 

 from its burrow. 



A.s it is during the month of June and fore part of July that 

 the beetle frequents the trees for the purpose of depositing its 

 eggs in the bark, it is probable that whitewashing the trunk and 

 large limbs, or rubbing them over with soft soap, early in June, 

 will secure them from molestation from this enemy. And in 

 districts where this borer is known to infest the Apple trees, the 

 trees should be repeatedly inspected during this part of the year, 

 and any of these beetles that are found upon them should be cap- 

 tured and destroyed. It is at midday of warm sunshiny days 

 that»the search for them will be most successful, as they are then 

 most active, and show themselves abroad. The larvae, when 

 young, appear to have the same habit with most other borers, of 

 keeping their burrow clean by throwing their castings out of it 

 through a small orifice in the bark. They can therefore be dis- 

 covered, probably, by the new sawdust-like powder which will be 

 found adhering to the outer surface of the bark. In August or 

 September, whilst the worms are yet young, and before they have 

 penetrated the heart- wood, the trees should be carefully examined 

 for these worms. Wherever from any particles of the sawdust- 

 like powder appearing externally upon the bark, one of these 

 worms is suspected, it will be easy, at least in young trees, where 

 the bark is thin and smooth, to ascertain by puncturing it with a 

 stiff pin, whether there is any hollow cavity beneath, and if one 

 is discovered, the bark should be cut away with a knife, until the 

 worm is found and destroyed. After it has penetrated the solid 



