66 GARDEN FOES. 



Fruit Tree Beetle (Scolytus rugulosus).— Both the 

 beetle and the larvnti are injuiiouis to fruit trees, boring 

 galleries just underneath the bark, as well as riddling the 

 latter with shot-like holes on the surface. The beetle is 

 small, about one-tenth of an inch long, and black in 

 colour. The females fly in April and May, alight on a 

 trunk or branch or shoot, and bore holes half an inch long 

 between the inner bark and sap wood, and there deposit 

 their eggs. In a few da3^s maggots appear, and begin to 

 form channels at right angles to the main one, thus prac- 

 tically honeycombing the inner bark, and cutting off the 

 supply of sap to the foliage. There are two broods of 

 these beetles in a year. After pupation the beetles make 

 their escajoe through the ruined bark. The larva is milky- 

 white in colour, legless, has a yellow head, and strong 

 brown mandibles. 



Remedies. — Once the beetles or larv;v are inside the 

 bark it is impossible to get at them. The best thing to 

 do with a tree that is attacked is to cut it down and burn 

 it forthwitli, so as to destroy both beetles and larvne. 

 Shoots or branches that show signs of dying are likely 

 to be infested, and should be cut off and burnt at once. 



Fruit Tree Tortrix (Semasia woeberiana). — Tlip 

 larvae of this small moth feed on the inner bark of young 

 fruit trees, causing cankered wounds to form, and sub- 

 sequent ill-health of the trees. The moth is of a brown 

 and black colour, streaked with orange and white, and 

 has fringed wings. It only measures half an inch in 

 diameter when its wings are expanded. The larva is 

 small, white, striped with pink. The larvae of another 

 moth, the Apple Clearwing (.Egeria myopiformis) is often 

 found infesting the bark of apple trees, in company with 

 the above larvte. 



Remedies. — Wherever the bark has a sickly look remove 

 a portion, and if the larvae are seen pare off the infested 

 parts and paint with Stockholm tar. Spraying the trunks 



