86 



ILLINOIS NATURAL HISTORY SURVEY CIRCULAR 47 



Mite 3, 33, 76 



European red 18 



gall-producing 3 



locust 43 



maple bladder-gall .... 45 



spruce spider .... 6, 39, 62 



two-spotted spider . . . 33, 62 



Monarthropalpus buxi .... 14 



Moth 



brown-tail 75 



cynthia 5 



European pine shoot .... 57 



gypsy 74, 75 



Nantucket pine . . . . 57, 58 



regal 37 



snow-white linden 40 



white-marked tussock . . 23, 24 



Zimmerman pine 58 



Mountain ash 7-8 



Mugho pine 54, 57 



Myzocallis ulmifolii 29 



N 



Native elm bark beetle .... 31 

 Nantucket pine moth . . . 57, 58 

 Needle scale, pine ... 54, 55, 65 

 Neoclytus acuminatus .... 6 



Neodiprion spp 53 



Nipple gall psyllid, hackberry . 35 



Norway maple 47 



Norway-maple aphid .... 47 



Norway spruce 64 



Nygmia phaeorrhoea 75 



Oak .... 14,48,51,53,68,75 



apple gall 52, 53 



bur 50 



gall 



gouty 52,53 



wool sower 52, 53 



kermes 50, 50 



leaf miner 51 



red 50,53 



white 50 



Oligonychus ununguis .... 62 

 Oystershell scale . 8,9,40,60,62,69 



P 



Pachypsylla celtidismamma . . 35 



Pachysandra 33 



Painted maple aphid .... 47 



Paleacrita vernata 21 



Panonychus ulmi 18 



Pear 75 



Periodical cicada 48, 49 



Periphyllus 



lyropictus 47 



negundinis 12 



Phenacaspis pinifoliae .... 54 



Phloem necrosis 33 



Phloeosinus dentatus 38 



Phyllophaga spp 48 



Phylloxera caryaecaulis ... 37 

 Phylloxera, hickory gall ... 37 



Physokermes piceae 64 



Pigeon tremex 47 



Pine 53,54,55,58 



Austrian 54, 57, 58 



bark aphid 56, 57 



jack 54,57,58 



moth 



Nantucket 57,58 



Zimmerman 58 



Mugho 54, 57 



needle scale 54, 55, 65 



red 57,58 



sawfly, red-headed 54 



Scotch 54,57,58 



shoot moth, European ... 57 



white 54,56,57 



Pineus strobi 57 



Pissodes strobi 54 



Plant louse (lice) 2 



Plectrodera scalator 59 



Plum 75 



Podosesia 

 syringae 



fraxini 7 



syringae 40 



Popillia japonica 73 



Poplar 48,59,68 



and willow borer 59 



borer 59 



Carolina 59 



Lombardy 59 



tent maker 60 



Porthetria dispar 75 



Potential insect enemies ... 73 

 Prionoxystus robiniae .... 59 



Privet 60 



thrips 60 



Profenusa canadensis .... 20 



Pruner, twig 48 



Pseudococcus comstocki .... 16 

 Psyllid, hackberry nipple gall . 35 

 Pulvinaria innumerabilis ... 43 

 Putnam scale 27, 28 



R 



Redbud 61,61 



leafhopper 61, 61 



Red-headed 



ash borer 6, 7 



pine sawfly 54 



Red 



mite, European 18 



oak 50,53 



pine 57,58 



Regal moth 37 



