79 i 



i 



INJURY BY GALL INSECTS. ORDER HEMIPTERA, FAMILY i 



APHIDIDiE. i 



C^^SK IS. \ 



64. The Sitka Spruce Gall-Aphis. 



Clwrines dhirlcus .' j 



A minute insect forming cone-liiie galls on the terminal twigs of the Sitka spruce 

 at Newport, Oreg. Very common and injurious to young trees. 



Exhibit: Work. i 



65. The Engelmann Spruce Gall-Aphis. : 



Chermes sibiricus f var. | 



Same habit as 64, but probably a variety or different species. Common on Engel- | 



inann spruce at Sand Point, Idaho. 

 Exhibit: AVork. 



INJURY BY CICADA. ORDER HEMIPTERA, FAMILY CICADID^. 



C^SK IS. i 



1 



66. Small Western Cicada. j 



Clcadii sp. I 



Injuring twigs of Douglas sjiruce, St. Helen, Oreg. I 



Exhibit: Adult and work. 



INJURY BY TWIG-MINER. ORDER LEPIDOPTERA, FAMILY ' 



TORTRICID^. 



CASE IS. \ 



67. The Pine Twig-Miner. i 



I 

 Tortricid. i 



A caterpillar of a moth with similar habits to that of the pine moth of Nantucket, ' 



excavating l>urrows through the pith of the terminal twigs and shoots of young 

 western yellow pine. Moscow Mountains, Idaho, where it was common and quite 

 injurious. 



Exhibit: Work. 



NORTHEASTERN STATES. 



INJURY BY BARK AND TWIG-BEETLES. ORDER COLEOPTERA, 

 FAMILY SCOLYTIDiE. 



CA.SE 19. 



68. The Balsam Fir Cryphalus. 



L'ryphalus n. sp. 



Excavates irregular, broad, elongate egg chambers to one side of the entrance bur- 

 row in the bark and surface of wood, the larval galleries radiating in all directions 

 and deeply grooved in the surface of the wood of the l:)ranches of tlying and dead 

 balsam fir. Shores and islands of Parmacheene Lake and Rump Mountain, Maine. 

 Exhibit: Work. 



69. The Spruce Cryphalus. 

 Cryphalus n. sp. 



Excavates broad transverse egg chambers in the bark and surface of wood; the 

 larval galleries but slightly grooved in the surface of the wood of dying and dead red 

 spruce and balsam fir. Islands and shores of Parmacheene Lake and near Portland, 

 Me. Common in bark of small dying and dead red spruce. 



Exhibit: Adult and work. 



