INSECT ENEMIES OF WESTERN FORESTS 
Trypedendron, 146, 147 
Twig— 
beetles, 29 
borers, 35. 
girdlers, 35. 
insects, 29-44. 
moths, 87. 
weevils, 33. 
Ulochaetes, 154. 
Urocerus, 167. 
Vespamima, 139. 
Walshomyia, 54. 
Wasps— 
eynipid, 53. 
horntail, 141, 155. 
wood, 141, 155. 
Webber, cypress, 43. 
Webworm, fall, 68. 
Weevils— 
acorn, 22. 
bark, 56, 138. 
nut, 22. 
root, 23, 26. 
terminal, 33. 
tip, 8. 
twig, 29, 33. 
136650 °—38——14 
| Weevils—Continued. 
wood-boring, 154. 
White grubs, 7, 28, 24. 
Windfalls, 110, 119, 133, 167. 
Winter injury, 11. 
Wireworms, 7, 23, 26. 
Witches’ brooms, 11. 
Wood borers— 
flatheaded, 147. 
metallic, 132. 
roundheaded, 150. 
Woodpeckers, 99, 105, 169. 
Wood stainers, 145. 
Woodwasps, 166. 
Woolly bears, 67. 
Worms— 
California oak, 68. 
carpenter, 155. 
measuring, 74. 
Xeris, 168. 
Xyleborus, 147. 
Xylococcus, 51. 
Xylocopidae, 162. 
Xylotrechus, 154. 
Zeiraphera, 84. 
Zootermopsis, 163. 
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