a 445 



Hemlock, insects injurious to: 

 scale insect : 



Putnam's scale, 227^. 

 herculaneus, Camponotus. si"*, 90-. 

 Hibernation, i9*-2o'\ 

 Hickory, insects injurious to: 

 borers : 



apple wood stainer, 290^. 

 ash borer, banded, 257-. 

 elm snout beetle, black, yT^^. 

 flat-headed borer, common, 87". 

 hickory bark borer, 257^, 275^. 

 hickory borer, banded, 256^, 267-. 

 painted, 256", 264^. 

 tiger, 256', 268^ 

 hickory snout beetle, 256", 274''. 

 leopard moth, 78^. 

 maple and oak twig- pruner, 6r''. 

 Neoclytus erythrocephalus, 71^. ~2^ 



powder post beetle, 296''. 

 red horned borer, small, 298'^. 

 rustic borer, 256^, 259^. 

 saperda, hickory, 256*, 269*. 



red-edged, 270". 

 twig girdler, 256'^, 271^. 

 Xyloterus politus. 292**. 

 gall insect: 



hickory gall aphid, 259^ 331*. 

 leaf feeders : 



black walnut caterpillar, 303*. 

 forest tent caterpillar, iio^*. 

 hickory horned devil, 258^, 305". 

 hickory tussock moth. 258", 314*. 

 tussock moth, white marked, 13^)'-'. 

 Xylina antennata, 129®, 131''. 

 Hickory bark borer, 257-, 2j^*-jg*''. 

 Hickory borer, banded, 256^, 267^-68'. 

 painted, 256". 264'-66". 

 tiger, 256*, 268''-69^. 

 Hickory gall aphid, 247'', 259', 33i''-32". 

 Hickory horned devil, 258^, 305'''-6'*. 



Hickory saperda, 256**, 269''-70'*. 

 Hickory snout borer, 256'-', 274'-75". 

 Hickory tussock moth, 258*^, 3 14'-! 5''. 

 hirticauda, Pimpla, 139''. 

 Hog peanut, locust leaf miner injuring, 



Homalomyia scalaris, 140". 



Honev locust, resistance to insect attack, 



47< 

 Honeydew, 244^-43^. 

 Hop aphis. 248**. 

 Hops, aphids injuring, 242^. 

 Hormaphis hamamelidis, 25 1^ 

 Horse-chestnut, resistance to insect attack, 



insects injurious to: 49. 

 cicada, dog day. 238^. 

 flat-headed borer, common, S7-. 

 leopard moth, 78'"'. 

 oyster scale^ 212". 



tussock moth, white marked, ids'', 132^, 

 136S. 

 Huckleberry, sugar maple timber beetle in- 

 juring. 508, 65-. 

 humuli, Phorodon. 248*^. 

 Hydrocyanic acid gas, 40^ 

 Hylesinus aculeatus, 257-', 288"-89^. 



opaculus. 257-', 288'. 

 Hymenoptera, 10". 21^: parasitic, 202'. 

 Hyperaspidius sp.. 216^. 

 Hyperaspus bigeminata, 198". 

 signata, 1818, 186', 186^, icjS'*. 

 figure. 182. 

 Hyphantria cunea, 142'', 143''. 



textor, 49, I05'', 1310, i42>'-46'. 253^ 

 li\pliantriae, Apanteles, 138", 145*. 

 h.sphantriae. Meteorus. 131", 138'', 145^ 



Ichneumon coeruleus, 138'*. 



subcyaneus, 138**, 324". 

 ichneumoneus. Clcrus, 278"''. 

 Ichneumonidae, 21''. 



