Elm Leaf Beetle 
Galerucella luteola Muller 
1 Cluster of eggs, enlarged 
i a Side view of single egg, more enlarged 
2 Recently hatched larva or grub, enlarged 
3 Full grown larva or grub, enlarged 
4 Pupa, enlarged 
5 Overwintered beetle, enlarged 
6 Fresh, brightly colored beetle, enlarged 
7 Leaf showing eating of larvae or grubs and a few holes eaten by beetles, eggs in 
clusters, cast larval skins and full grown larvae 
8 Leaf nearly skeletonized by grubs of larvae and on it three cast larval skins 
9 Leaf showing holes eaten by beetles 
Bag or Basket Worm 
Thyridopteryx ephemeraformis Haworth 
10 Bag or larval case as it passes the winter 
11 Same as preceding but cut open to show the pupal case and the eggs 
12 Several eggs, enlarged 
13 Recently hatched larva, enlarged 
14 Cases of young larvae on twig 
14 a Leaf eaten by young larvae 
15 Older larvae in their bags 
16 Full grown larva removed from its case 
17 Full grown larva walking with its case 
18 Male pupa, 
19 Female moth 
20 Male moth with wings spread 
21 Female pupa 
22 Bag of male hanging from a leaf and with the empty pupal case protruding 
from its lower extremity 
