(aS 
INJURY BY GALL INSECTS. ORDER HEMIPTERA, FAMILY 
APHIDIDZ. 
CASE 18. 
64. The Sitka Spruce Gall-Aphis. 
Chermes sibiricus ? 
A minute insect forming cone-like galls on the terminal twigs of the Sitka spruce 
at Newport, Oreg. Very common and injurious to young trees. 
Exuisit: Work. 
65. The Engelmann Spruce Gall-Aphis. 
Chermes sibiricus ? var. 
Same habit as 64, but probably a variety or different species. Common on Engel- 
mann spruce at Sand Point, Idaho. 
Exurisit: Work. 
INJURY BY CICADA. ORDER HEMIPTERA, FAMILY CICADIDA. 
CASH 18. 
66. Small Western Cicada. 
Cicada sp. 
Injuring twigs of Douglas spruce, St. Helen, Oreg. 
Exuisir: Adult and work. 
INJ URY BY TWIG-MINER. ORDER LEPIDOPTERA, FAMILY 
TORTRICIDZ. 
CASE 18. 
67. The Pine Twig-Miner. 
Tortricid, 
A caterpillar of a moth with similar habits to that of the pine moth of Nantucket, 
excavating burrows through the pith of the terminal twigs and shoots of young 
western yellow pine. Moscow Mountains, Idaho, where it was common and quite 
injurious. 
Exursit: Work. 
NORTHEASTERN STATES. 
INJURY BY BARK AND TWIG-BEETLES. ORDER COLEOPTERA, 
FAMILY SCOLYTIDZ. 
CASH 19. 
68. The Balsam Fir Cryphalus. 
Cryphalus 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 branches of dying and dead 
_ balsam fir. Shores and islands of Parmacheene Lake and Rump Mountain, Maine. 
Exuisit: 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. 
Exuisit: Adult and work. 
