I.N'SLCTS AIFECTl.NG I'AKK ANU WOODLAND TREES 68 1 



Pine leaf miner 

 Paralcchia pinifoliclla Chanib. 



A small t ylindric larva mines tlic leaves of various spot ies of ]>ine. 



This small leaf miner is comiiKjn on hard pine at Karner and the same 

 is undoubtedly true in other sections of the State where this tree occurs. 

 The tip of the leaf and in many instances the; larger jjortion above its base 

 is mined, dies and turns brown [pi. 20, tig. 5 |. 



Description. The moth is very small, brownish, irregularly gray banded 

 with a wing spread of 1% inch, and may be recognizetl b)- reference to i)late 

 20, figure 23. The Q^g'g has been described as reddish brown, globular, 

 about .14 mm in diameter. The larva is '/f, inch long, yellowish brown with 

 the head, thoracic shield and anal plate dark brown. 



Life history. A single needle apparently affords ample sustenance for 

 the development of the larva, which enters near the middle of the leaf and 

 burrows toward the end, and then, reversing its course, proceeds toward the 

 base. The borings are pushed out at the point of entrance. Professor 

 Comstock states that there are certainl\- two and possibly three genera- 

 tions annually. 



Natural enemies. This leaf miner is subject to attack by a number of 

 parasites, notably several minute Chalcids and a small Tachina fl\-. 



Bibliography 

 1880 Comstock, J. H. U. S. Dep't Agric. Rep't 1S79, ]>. 238-41 

 1890 Packard, A. S. L'. S. Ent. Com. 5111 Rep't, p. 793-97 

 1903 Felt, E. P. lor. Fish & Oame Com. 71)1 Rep't, p. 509-10 



Pine tube builder 

 Jiiilia polilaiia Haw. 

 Peculiar tubes of webbed-together pine needles occur in midsummer and in 

 September on white and probably other ])ines. 



This insect is rarely abundant ami is worth)- of notice largely because 

 of the peculiar tubes it constructs among the pine needles. These consist 

 of about 15 needles, which are bound together by silken threads, and the 



