a 453 



Polygonotus salicicola. 301*. 

 Poplar, insects injurious to : 49. 

 borers : 



bronze birch borer, 287^. 

 carpenter worm, 80*, 84'. 

 linden borer. 91*. 

 poplar borer, 51", 98'. 

 willow borer, mottled, 51". uxj''. 

 Xyloterus .?/>., 257', 294**. 

 gall insects : 



Pemphigus populi-transversus, 247''*. 

 willow shoot sawfly, 302^''. 

 leaf feeders: 



bag or basket worm, 127^. 

 Cottonwood leaf beetle, 258", 317**. 

 elm caterpillar, spiny, 105**. 158*. 

 elm sawfly. 105*, 155'. 

 forest tent caterpillar, 107^, no®, 

 tussock moth, white marked, 136''. 

 webworm, fall, 142". 

 willow slug, yellow spotted. 258*, ^22^. 

 Xylina antennata, 129''. 

 scale insect : 



oyster scale, 21 1''. 

 Poplar, yellow, apple wood stainer injuring, 



290". 

 Poplar borer. 51", 98^-100^. 

 populator, Cenocoelius, 85*. 

 populi-transversus, Pemphigus, 247*. 

 Porthetria dispar. 8*. 28\ 30", 49. 105^, 1 16'- 



23'. 254». 

 Powder-post beetle, 7^, 257*, 296''-98^. 

 Praying mantis, 146-j 154-. 

 European, 154^. 

 southern, 24". 

 Predaceous insects, 2o''-25-. 

 primus, Derostenus, 328". 

 Prionidus cristatus, 140*. 146^, 324^, 328^. 

 Prionoxvstus robiniae, 45^, 49, 51', 51®, 79''- 



84^. 

 Proctotrypidae, 22^. 

 Promethea moth, 45'*. 



liromethea, Callosamia, 45''. 



I'runus, Putnam's scale injuring, 227^. 



Pteronialus cuproideus, 138", 139^. 



fuscipes, 161". 



Ijuparuni, ifii". 



vanessae. 1 13-, 161^. 

 Pteronus ventralis, 258*, 322^^-24®. 

 Ptilinus ruficornis, 257", 298-''-99'. 

 j)ulchellus, Perissopterus, 208", 231'. 

 t ulvinaria acericola. 172", i79'-82". 



innumerabilis, 8*, 12", 49. 173-, 196^-200*. 

 1 ulvinariae, Aphycus, 199*. 

 I-unctatissimus. Corthylus, 50**. 6^^-6y^'. 

 punctatus, Phytonomus, 18". 

 punctiformis, Platynus. 153". 

 Pupal stage, i8'''-i9". 

 puparum, Pteronialus, 161". 

 Putnam's scale. 173^ 22&''-2'/^. 

 ]jyrina, Zeuzera, see Zeuzera pyrina. 



quadripustulata, \\'intheniia. 132'. 138^. 

 I (|uadrispinosus. .Scolytus. 257", 275'*-79''. 

 Ouedius molochinus, 153". 

 Quince, insects injurious to: 

 borers : '■ 



maple and oak twig pruner. 61*. 

 twig girdler, 2J7/'. 

 leaf feeders : 



bag or basket worm, 127^ 

 brown tail moth, 164'. 

 tussock moth, white marked, 136"'. 

 Xylina antennata, 131". 

 scale insects : 



San Jose scale, 173". 216*. 

 scurfy scale, 173", 214". 



Raspberries, rose scale injuring, 173*, 228^. 

 Red-edged saperda, 270^-7 1 ^ 

 Red-horned borer, small, 257", 298^-99'. 

 Red spider, Californian, 14*. 

 Reddish elm snout beetle, 75'. 

 Redstart, 2^*, iGo". 

 American, in". 



