156 



carbolic acid, at the time wlieu the iiareut moth is active, usually about the 

 middle of JIa.v to the tirst week in Juue. var.viug somewhat with the locality. 

 Oue piut of carbolic acid to a bushel of lime, 



It.\SPDERRY t'AXE BOKER (Ohvrca hi lllllcllld til ) . 



The adult of this insect is a sleuder-bodied black beetle, with a yellow 

 collar .iust behind the head. It apiiears early in summer, usually during 

 Juue. and deposits eggs in the greeu canes of raspberries and blackberries. 

 The process of oi-iposition is peculiar. The beetle makes two transverse rows 

 of punctures, about half an inch apart, in the cane; toward.s the tip and 

 midway between these she deposits the egg. The rows of innictures make up 

 a kind of girdling, which causes the tip of the cane to witlun-. A slmrt time 

 after the egg is deposited it hatches into a small cylindrical larva, that bures 

 downwards through the pith. By autumn they have frequently reached the 

 bottom of the cane, where they change to pupa\ and the following .June 

 emerge again as beetles. The larva is footless. 



8oon after the canes are punctured by the beetle they wilt ; consequently, 

 if they are examined about midsunmier. affected canes can easily be dis- 

 ting\iished. and they should then be cut off below the lower ring of punctures 

 and burned. If the in.iury is noticed later, the whole cane should be inilled 

 up and dcstrciycd, to be sure to get the larva. 



liASl'liKRRV ItOOT BORKR {Bcillllicill IIKI ll/i 11(1 td) . 



3 



(Flo. o.J. I (Flc. 56.) 



It is quite distinct from the cane-borer, having in the larval state sixteen 

 legs, six of wliich are fully dexeloped. the others not being very well detined. 

 The parent moth is clear-winged, with a black body, prettily banded and 

 marked with yellow. The eggs are depo.sited in July on the leaves of the 

 raspberry, and the young larvse, when hatched, find their way to the canes 

 and feed upon the pith in the interior, gradually working down to the root, 

 where they winter. In the following spring they work up again, usually 

 through a fresh cane, to a height of six inches or more above ground, and eat 

 the cane nearly through, in preparation for the exit of the future moth. 

 Within the cane and near this prepared spot the change to chrysalides takes 

 place, and these, when the time approaches for the moth to escaiie, bin-st 

 through the outer skin of the canes, and the moths soon take their flight and 

 commence to lay their eggs, as previously stated. 



Little can be done towards the destruction of this pest, other than 

 destroying the infested roots as soon as they are noticed. The application of 

 boiling water to infested roots is advised by a Californian writer, but applicable 

 only to very limited areas. 



