176 FORESTRY WORK 



Fungi. 



Nectria Cinnabarina (the Coral Spot Fungus). This 

 fungus takes its name from the colour of the small conidia 

 cushions that break out upon the bark near infected spots. 

 It mostly attacks dead branches, but the mycelium will 

 spread from these to sound wood, and prevent the flow 

 of sap, which kills the affected part. Damaged branches 

 should be pruned off and coated with tar. Horse Chest- 

 nut, Lime, Maple, and Elm, are also attacked. 



POPLARS AND WILLOWS. 

 Beetles. 



Melasoma Populi. Beetle nearly J inch long, blackish- 

 blue body, brick-red wing-cases with a black tip. The 

 larvse hatch from eggs laid on the underside of leaves, and 

 feed upon the latter, skeletonizing them. The beetles eat 

 holes in the leaves. 



Phyllodecta Vitellince. A very pretty little beetle about 

 i inch long, metallic colourings from bluish- black to 

 greenish-black with tinges of copper. The larvae eat the 

 leaves in the same manner as the former beetle. 



Saw-Flies. 



Croesus Septentrionalis. The caterpillars feed upon 

 Poplar, Alder, Willows, and other softwoods. They are 

 bluish-green, with black dots in two rows along the body, 

 and are about 1J inches long. They are usually found in 

 clusters. When disturbed, they always erect the hind 

 portion of their body. 



