THE DAVEY INSTITUTE OF TREE SURGERY 
29. In the following discussion 
the remedies advised are based upon 
experience and experiments, or have 
been traced far enough back so that 
we know they are the best that can 
be given until more is known on the 
subject. 
LEPIDOPTERA 
30. Very few of the butterflies 
and moths comprising this order 
have the habit of burrowing into 
wood or the harder part of plants. 
The three species considered below 
represent the two families contain- 
ing the more important of these 
borers. 
31. The injury they do is done 
in the larva stage. These larve are 
provided with well developed thoracic 
legs, as well as five pairs of prolegs. 
2 1. LEOPARD MOTH 
Courtesy Connecticut Agr. Exp. Station. Family COSSID-. Species Zeuzera 
Fig. 1 pyrina Fabr. 
Leopard moth and its work. . 
After W. E. Britton. 32. This European moth was 
introduced into this country be- 
fore 1880. It was first found in Hoboken, New Jersey, in 1881, 
and has since spread up the Atlantic coast from New Jersey to 
Massachusetts, causing very serious damage to the shade trees in 
many of the cities. It has not been found far back from the coast, 
nor in the country where the native birds are plentiful. 
33. This moth is widely distributed in Europe, where it has 
been known in the literature under the name of Zeuzera e@sculi 
Linn. 
34. Food Plants. In Europe it is reported as feeding upon 
six species of shade trees, but in this country it has been found 
feeding upon eighty-three different species of trees and shrubs. It 
is most injurious to the elms, maples, horse chestnut, Ohio buck- 
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