Sugar maple borer 
Plagionotus specious Say 
1 Place where egg was laid 
i a Another more than normally discolored 
2 Borer or grub in September from egg laid the same season 
3 Nearly full grown borer 
4 Adult or beetle 
5 Hole through which the beetle escaped from the trunk 
6 Sawdust or borings packed in burrow 
Maple and oak twig pruner 
Elaphidion villosum Fabr. 
7 Grub or borer in its burrow, a portion of the twig being cut away to show its 
work. 
ya Small twig with only a thin shell of bark, the wood being nearly all eaten 
8 Pupa in burrow. The base of both twigs represented has been nearly eaten off 
by the larva 
9 Adult or beetle 
Cottony maple scale 
Pulvinaria innumerabilis Rathv. 
10 Active or recently hatched young 
11 Adult females, many eggs can be found in the woolly masses 
12 Leaf with many young scales on its underside 
