B^planation of Plate 13.* 



Fig. 



1. Pitch mass of pitch twig moth Rctinia coiiistockiana Fern., with pupal shell 



protruding therefrom in one case ; the other shows old and recent pitch. 



2. Pitch mass of pitch inhabiting midge, Diplosis rcsinicola Osten Sacken. 



3. Shoot infested with Nantucket pine moth larva, Retinia frustrana Scudd., 



showing the abortive growth. 



4. Pitch pine needle gall fly, Diplosis pini-rigidcs Pack., showing needles deformed 



by this insect. 

 4a. Work on needles of the previous year. 



5. Needles affected by the pine leaf miner, Gclccliia pinifoliella Chamb., note the 



brown tips of the affected needles. 



6. A pine sawfly larv:u, Lophyrits abictis Harris in natural position on the 



needles; below are stubs of eaten needles. 

 6a. Cocoon of same at base of pine needles. 



7. Pine Chrysomela, G lyptoscclis pubcsccus Fabr., much enlarged. 



8, 



9 



10, 

 1 1 



Pales weevil, llylobius pales Herbst., much enlarged. 

 Chrysobotliris piisilla Bap. ct Gory, much enlarged. 

 Clirysobotliris floricola Gory, enlarged. 

 Chrysobotliris dcutipcs Germ., much enlarged. 

 12, 13 and 14. Varieties of the light loving grapevine beetle, Anoinala liicicola Fabr., 

 a species which is very abundant on hard pines. 



15. PilopJiorns crossipiS Uhl., much enlarged. 



16. Magdalis cilutacca Lee, much enlarged. 



17. Magdalis perforata Horn, niuch enlarged. 



18. Lace winged fly, Oi'/rw/r? species. 

 i8a. Cocoons of same on needles. 



♦Executed from nature, under the author's direction, by L. H. Joutel. 

 498 



