a 451 



Parasites or natural enemies : 

 elm scurfy scale, 208". 

 Euonymus scale, 214'^. 

 European willow gall midge, 301^. 

 fall webworm, i45"-46-'. 

 forest tent caterpillar, 21^, ii2''-i3'^. 

 golden oak scale, 33o''-3i*. 

 locust leaf miner. 328'. 

 maple leaf scale, 181''. 

 Neoclytus erythrocephalus, 73^ 

 oak caterpillar, yellow striped, 309". 

 oyster scale, 212". 

 pigeon tremex, 63". 

 pine bark aphid, 195'. 

 pine leaf scale, 23 1-. 

 Putnam's scale. 227'. 

 round-headed apple borer, 85*. 

 rustic borer, 261". 

 San Jose scale, 222''. 

 scurfy scale, 216^. 

 spiny elm caterpillar, i6i''-62^. 

 tuliptree scale, 210". 

 tussock moth, white marked. 20^-21', 



willow slug, yellow spotted, 324". 

 Xylina antennata, 131'''. 

 Faridae, 32'-. 

 Paris green, 34-*, ^/^. 

 parorgyiae, Apanteles. 138". 

 Peachtree, insects injurious to: 

 borers : 



flat-headed borer, common, 87-. 

 maple and oak twig pruner, <>v\ 

 twig girdler, 273". 

 leaf feeders : 



brown tail moth, 164'. 

 forest tent caterpillar, no*. 

 Xylina antennata. 130-', 131*. 

 scale or sucking insects : 

 black-banded scale, 200^. 

 box elder plant bug, 239''. 

 Putnam's scale, 227''. 



Peartree, insects injurious to: 

 borers : 



flat-headed borer, common, 87-. 

 maple and oak twig pruner, 61^. 

 Xeoclytus erythrocephalus. /2'K 

 pigeon trcme.x. 63". 

 twig girdler, 273''. 

 leaf feeders : 



bag or basket worm, 1 27^. 

 brown tail moth, 164*. 

 forest tent caterpillar, 107^. 

 tussock moth, white marked, 136*. 

 Xylina antennata. 131''. 

 scale insects : 



oyster scale, 21 1". 

 Putnam's scale, 227-''. 

 Peas, insects injurious to: 

 aphids, 242. 



Xylina antennata, 131'. 

 Pecan, twig girdler injuring, 273*. 

 pedalis, Pimpla, 112*. 

 Pemphigus fra.xinifolii, 196-. 

 imbricator, 196^. 

 populi-transversus, 247''. 

 rhois, 247". 



tessellatus, 173^ i95*-96^ 

 ulmifusus. 247*. 

 Pentatomidae. 24^. 

 Pentilia mirella, 222^. 



figure, 222. 

 periliti, Otacustes, 140^ 

 Perimegatoma variegatum, 140^. 

 Periodical cicada, 173", 231^-37*. 

 Perissopterus pulchellus, 208", 231^. 

 perniciost's, Aspidiotus, sec Aspidiotus per- 



niciosus. 

 Persimmon, insects injurious to : 

 hickory horned devil, 305*. 

 twig girdler, 273*. 

 Pezomachus insolitus, 140'. 

 Phaeogenes hebe, 166^. 

 Phcnacoccus acericola, 49, 172", i82'-86''. 



