CONTROL OP GIPSY MOTH BY FOREST MANAGEMENT. 9 



Oak, Red (Quercus rubra Linn.). 



Oak, Scarlet (Quercus coccinea Muench.). 



Oak, Scrub (Quercus pumila [Marsh.] Sudw.). 



Oak, Swamp white (Quercus platanoides [Lam.] Sudw.). 



Oak, White (Quercus alba Linn.). 



Service Berry (Amelanchier canadensis [Linn.] Medic). 



Sumac, Dwarf (Rhus copallina Linn.). 



Sumac, Staghorn (Rhus hirta [Linn.] Sudw.). 



Tamarack (Larix laricina [Du Roi] Koch.). 



Willow, Glaucous (Salix discolor Muehl.). 



Witch Hazel (Hamamelis virginiana Linn.). 



Class II: Species that are favored food for gipsy-moth larvae after the earlier larval stages. 



Chestnut (Castanea dentata [Marsh.] Borkh.). 



Hemlock (Tsuga canadensis [Linn.] Carr.). 



Pine, Pitch (Pinus rigida Mill.). 



Pine, Red (Pinus resinosa Ait.). 



Pine, White (Pinus strobus Linn.). 



Spruce, Black (Picea mariana [Mill.] B. S. P.). 



Spruce, Red (Picea rubens Sargent.). 



Spruce, White (Picea canadensis [Mill.] B. S. P.). 



Class III: Species that are not particularly favored, but upon which a small proportion of the 

 gipsy-moth larvae may develop. 



Beech, Blue (Carpinus caroliniana Walt.). 



Birch, Black (Betula lenta Linn.). 



Birch, Yellow (Betula lutea Michx.f.). 



Cherry, Black (Prunus serotina Ehrh.). 



Cherry, Choke (Prunus virginiana Linn.). 



Cherry, Wild Red (Prunus pennsylvanica Linn.f.). 



Cottonwood (Populus deltoides Marsh.). 



Elm, American (JJlmus americana Linn.). 



Elm, Slippery (Ulmus pubescens Walt.). 



Gum, Black (Nyssa sylvatica Marsh.). 



Hickory, Bitternut (Hicoria minima [Marsh.] Britton). 



Hickory, Mocker-nut (Hicoria alba [Linn.] Britton). 



Hickory, Pignut (Hicoria glabra [Mill.] Britton.). 



Hickory, Shagbark (Hicoria ovata [Mill.] Britton). 



Hop Hornbeam (Ostrya virginiana [Mill.] Koch.). 



Maple, Red (Acer rubrum Linn.). 



Maple, Silver (Acer saccharinum Linn.). 



Maple, Sugar (Acer saccharum Marsh.). 



Poplar, Silver (Populus alba Linn.). 



Sassafras (Sassafras sassafras [Linn.] Karst.). 



Class IV: Species that are unfavored food for gipsy-moth larvae. 

 Arborvita? (Thuja occidentalis Linn.). 

 Ash, Black (Fraxinus nigra Marsh.). 

 Ash, Red (Fraxinus pennsylvanica Marsh.). 

 Ash, White (Fraxinus americana Linn.). 

 Balsam Fir (Abies balsamea [Linn.] Mill.). 

 Butternut (Juglans cinerea Linn.). 

 Cedar, Red (Juniperus virginiana Linn.). 

 Cedar, White. (Chamaecypar is thyoides [Linn.] B. S. P.). 

 Dogwood, Flowering (Cornus florida Linn.). 

 64360°— Bull. 484—17 2 



