FIELD BOOK OF INSECTS. 



munity" mine is one in which there are several larvae; 

 it is probably formed by several blotch mines running 

 together. 



These are among the smallest of Lepidop- 

 tera, some having a wing expanse of not 

 over an eighth of an inch. S. amelanchieriella, bread 

 mines in leaves of June-berry (Amelanchier); S. anguinella, 

 narrow, serpentine mines in oak leaves; S. saginella, moder- 

 ately broad, serpentine mines in oak and chestnut leaves; 

 S. cary&foliella, very narrow, whitish mines in hickory 

 leaves; S. corylifoliella, long, narrow, winding mines in 

 hazel leaves; S. juglandifoliella, narrow, whitish mines in 

 walnut leaves; S. platanella, large, irregular, blotch mines 

 on under side of sycamore leaves; S. ostry&foliella, moder- 

 ately wide, tract mines in iron wood leaves; S. virginiella 

 long, narrow, track mines in iron wood leaves; S. platea, 

 moderately wide, winding mines in oak leaves; S. pomi- 

 vorella mines in apple leaves; 5. prumfoliella, narrow mines 

 in wild cherry leaves; S. roscefoliella, serpentine mines in 

 sweetbrier leaves; S. rubifoliella, blotch mines, and S. 

 villosella, narrow linear mines in blackberry leaves. 



Bucculatrix larvae are leaf-miners when young but later 

 feed externally. They hibernate in slender cocoons which 

 have longitudinal ribs or ridges and which are usually 

 fastened to the trunks or large limbs of trees. 



All the larvae are leaf-miners and there 

 Phyllonoryter afe & } number of spe cies. The 



or Lithocolletis . 



samples given here represent a very 



small part of the Northeastern fauna, oak, especially, 

 being largely left out of account since it harbors so 

 many of the numerous species which make similar 

 mines. Oak: cincinnatiella makes large community 

 mines on the under side of leaves; conglomeratella, 

 leathery, brown blotch mines on upper side of leaves; 

 tubiferella, long, sinuate band-like mines, gradually 

 increasing in width and frequently crossing, on upper side 

 of leaves. Chestnut: macrocarpella, upper side of leaves 

 (also on oak); kearfottella, narrow mines on under side, 

 usually along a vein. Maple: lucidicostella, on under side; 



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