AGRICULTURAL EXPERIMENT STATION. 177 



Germany and though I can detect a slight difference between the 

 females of the European and American form yet there is not differ- 

 ence enough to separate them as distinct species." We have seen 

 this beetle in abundance in juniper about Orono and we have no 

 doubt that it has transferred its depredations from adjacent forest 

 to the orchards. Professor Fletcher reports its increase in Nova 

 Scotia. 



Below we give a description, the life history and suggestions for 

 the treatment of this beetle. 



DESCRIPTION. 



So far as w r e know the eggs have not been described. They 

 must be very small and are said to be laid at the base of the buds. 

 We have never seen them The young larvae bore into the wood 

 making deep channels which in small twigs interfere with 

 • the circulation of the sap, and the twigs wither giving the 

 |\, appearance of blight, hence the name Pear-blight Beetle. 

 The work of this beetle should not be confounded with the 

 Pear-blight proper which is caused by a species of bactaria. 

 fig. it. When the larvae are full grown they transform to pupa? in 

 bfiVht the burrows and finally emerge as small beetles about one- 

 Nat urai tenth of an inch long and of a dark brown or nearly black 

 eniarged.color, with the antennae and legs of a rusty red. The 

 thorax is short, very convex, rounded and roughened. The wing 

 covers are marked by longitudinal rows of punctures. The hind 

 part of the body slopes abruptly. The beetle natural size and 

 enlarged are shown in Fig. 17. The beetles leave their burrows in 

 July and deposit eggs before August. 



REMEDIES. 



As these beetles work wholly under the bark they cannot be reached 

 by insecticides. The only way is to watch the trees during the 

 latter part of June and July and if blighted twigs or diseased limbs 

 are noticed examine the branches for small pin holes and if found 

 the presence of this or some related species may be suspected. The 

 diseased limb should be cut at once below the injury far enough to 

 include all the burrows, and burned, for the beetles will transform, 

 emerge and attack new trees. As these beetles live in forest trees 

 orchards near timber would be more likely to become infested. 



