INDEX 



This index includes technical and common names of insects and com- 

 mon names of trees and shrubs. Page numbers of illustrations are indicated 

 by boldface type. A page number for a subject may indicate the beginning 

 of the section or subsection in which the subject is discussed. Names are 

 listed in the singular regardless of whether they appear in the text as 

 singular or plural. The name of an insect or disease may refer either to the 

 thing itself or to the damage it causes. 



Aceria snetsingeri 36 



Agrilus anxius 11 



Ailanthus 3 



webworm 3, 4 



American elm (see also 



Elm) 21,23,33 



Anisota rubicunda 46 



Aphid 1, 2, 47, 76 



boxelder 12 



Cooley spruce gall . . 20, 21, 64 

 Eastern spruce gall .... 64 

 elm 



cockscomb gall 29 



leaf 28,29 



Norway-maple 47 



painted maple 47 



pine bark 56, 57 



spirea 62, 63 



tuliptree 66 



willow 68, 69 



woolly elm 29 



woolly hawthorn .... 16, 17 



Apple 12, 16, 68, 75 



oak (gall) 52,53 



tree borer, flatheaded . 46, 46, 48 



Aphis spiraecola 62 



Arborvitae . . 5,39,43,62,65,68 



leaf miner 6 



Arqyresthia thuiella .... 6 



Ash 6, 24, 40, 60, 62, 69 



borer 7, 8 



borer, red-headed .... 6, 7 



mountain 7-8 



Aspen 59 



Aspidiotus 



ancylus 28 



perniciosus 18 



Atteva aurea 3 



Austrian pine .... 54, 57, 58 



B 



Bagworm . 5, 5, 39, 43, 65, 68, 76, 77 

 Banded elm leafhopper .... 33 

 Bark 



aphid, pine 56, 57 



beetle 



hickory 36 



juniper 38 



native elm 31 



smaller European elm . 31, 32 

 Beetle 



elm leaf 24, 25 



cottonwood leaf 60 



hickory bark 36 



Japanese 73, 73 



juniper bark 38 



May 48 



native elm bark 31 



smaller European elm bark 31, 32 



Birch 11 



borer, bronze 11 



skeletonizer 11 



white 11 



Bittersweet 33 



Black 



cherry 12 



locust 40 



vine weevil 69, 70 



walnut curculio 68 



Bladder gall, maple 45 



Bladder-gall mite, maple ... 45 

 Blue spruce, Colorado .... 64 

 Borer . . . 1, 2, 48, 59, 66, 68, 77 



ash . . 7,8 



bronze birch 11 



cottonwood 59 



dogwood 20 



elm 29,31 



flatheaded apple tree . 46, 46, 48 



locust 40 



lilac 40,41 



oak 48 



poplar 59 



poplar and willow 59 



red-headed ash 6, 7 



Boxelder 11,13 



bug 2, 11, 12 



aphid 12 



Boxwood 14 



leaf miner 14 



Brachyrhinus sulcatus .... 69 



Bronze birch borer 11 



Brown-tail moth 75 



Bucculatrix canadensis ella . . 11 



Bud scale, spruce 64, 64 



Budworm, spruce 65 



Bug 



boxelder 2, 11, 12 



June 48 



sycamore lace 65, 66 



83 



