SUPERFAMILY TINEOIDEA 



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fold of the leaf, or in some crevice, or on the ground. There 

 are two types of mines. The miners that work on legumes 

 and on willows make digitate, flat, pale yellow mines. Those 



Fig. 42. The work of the digitate leaf-miner of the locust, Parectopa 

 robiniella. A, upper side of locust leaf with a number of mines; B, under 

 side view of a single leaflet, torn open to show the frass neatly packed away 

 in a vault, so to speak, and the passage-way to the upper-side mine, which 

 is clean. 



that work on plants of the Compositae make at first narrow 

 winding frass-filled mines, which later become blotched and 

 expanded bladderlike, with both layers of epidermis puffed 

 out. 



