Lepidopterous Leaf-Mixers 



(All photographs except Fig. 4 from Slingerland Collection, Cornell 



University) 



Fig. 1. Dogwood leaves bearing mines and leaf rolls of Gracilaria sp.? 

 The empty pupal skin protudes from the one on the right. Fig. 2. Plum 

 leaf heavily infested by the Trumpet leaf-miner Tischeria malifoliella. 

 Note the concentric lines of frass. Fig. 3. One of these same mines more 

 enlarged^ Fig. 4. A mine of Marmara />nm<>n.<ll<i in the skin of an apple. 

 (After Knight.) Fig. 5. A spray of arbor-vitae mined by the larva of 

 Argyresthia thuiella. Fig. 6. Apple twigs bearing hibernating cases of 

 Coptodisca splendoriferella. These cases are cut from the mines. Fig. 7. 

 Larvae of Coleophora fietcherella. The largest one bears a Hymenopterous 

 parasite on its back. Fig. 8. A spray of apple bearing these same larvae 

 in their cases. One of the mines shows in the lowest leaf. 



