35 



INSECTS INFESTING MAPLE TREES. 



By E. B. Keed, London, Ont. 



1. The Maple Borer or Beautiful Clytus 



{Clytns upcciosvs. Say). 



2. The Rosy Forest Caterpillar {Dryocampa 



rnbkuitda, Fab.) 



3. The America,!! Siikwoini(Teleapolyphemu3, 



Linn.). 

 i. The Cecropia Emperor Caterpillar (Platy- 

 samia cucropia, Linn.). 



5. The Maple Owlet Moth {Apatela 



Americaiia, Harr. ). 



6. The Banded Maple Moth (Ophiusa bistria- 



ris, Hubner). 



7. The Maple Leaf Cutter (Oniix acerifoliella. 



Fitch). 



8. The Maple Measuring Worm (Stegania 



pustularia, Guenee). 



The cultivation and protection of our forest trees is a subject which is, as each 

 succeeding year rolls by, being slowly but forcibly brought to the notice of our Canadian 

 agriculturists. 



The rapid destruction of timber trees for fuel and building purposes, and the very 

 evident effect that is being gradually produced on our climate and soil, added to the 

 lessons that /i.xperience in other countries affords, ought certainly to attract the attention ■ 

 of every well-wisher to our future prosperity. Whilst the forests of Canada are justly a 

 source of much pride and material wealth to the community, the Maples amongst all our 

 native trees arc perhaps the best known and the most highly and widely esteemed. 



Admirably adapted for shade and ornamentation, whether for garden, park, or field, 

 most excellent for fuel, exceedingly beautiful when worked up by the cabinet maker, and 

 especially valuable for their saccharine matter, the Maples surely stand preeminent among 

 our native Canadian forests. 



It is, therefore, very desirable that we should examine and learn something of the 

 habits and history of any insects whose depredations would affect the growth or well- 

 being of these beautiful trees. 



1. THE MAPLE BOEER {Chjtus spedosus, Say). 

 Order, Coleoptera ; Family, Cerambycid.f. 



This destructive insect belongs to a family of beetles known as the Long-horns or 

 Capricorns, the grubs or larva; of which are all borers, penetrating with ease the hardest 

 timber, and causing immense devastation amongst the respective trees which they severally 

 affect. 



In consequence of their habits, which are exceedingly varied, the proceedings of the 

 larvffi are difficult of observation, some living altogether in the main trunk of trees, while 

 others attack the branches only, some devouring the wood, others the pith. 



The number of species in tl-.is family is very large, and there is hardly a single kind 

 of tree that is exempt from the attacks of one or other of these Borers. 



The Maple Borer or Clylus spedasv.s was first observed and described in its beetle 

 state by Mr. Thomas Say, in 1824. It is a very beautiful insect, and may readily bo 

 distinguished by its brilliant black and yellow colours, giving it much the appearance of 



