270 "Wisconsin State Horticultural Society. 



ENTOMOLOGICAL NOTES. 



As but few of the farmers and horticulturists of the state are familiar with 

 the habits and transformations of even tbe most common of our insect ene- 

 mies, it was thought best to give a much fuller account of some of those 

 briefly mentioned by Dr. Hoy in his address on Insects. In the preparation 

 of these notes, the reports of the leading entomologists, especially those of 

 Dr. Harris, Profs. Riley, Thomas and Packard, were frequently consulted, 

 and facts there gathered were arranged so as to give a general rather than a 

 complete scientific account of the life history of the insects described. The 

 thanks of the society are due to Prof. Cyrus Thomas, State Entomologist of 

 Illinois, and to Miss Emma A Smith, of Peoria, Illinois, for their kindness 

 in giving us the use of some of the cuts illustrating the notes. 



Orchard. 

 Clisiocampa Americana — Harris. 



The codling moth, the canker worm and the tent caterpillar are 

 justly regarded as the three great enemies of the orchard. In de- 

 structiveness, arising from numbers and general distribution, the 

 first is usually considered much the worst for the apple. The can- 

 ker worm and the tent caterpillar are confined to narrower limits, but 

 are equally, if not more, destructive to orchards infested with 

 them, for while the codling moth leaves a portion of the crop un- 

 harmed; they annihilate all the fruit and impair the vitality of the 

 trees. The tent caterpillar is much more generally known and 

 widely extended than the canker worm, owing to the fact that in 

 its habits it is much more likely to attract attention, and it is much 

 more easily conveyed from place to place in the moth states. 



They multiply very rapidly when once they have gained foot- 

 hold, and unless active measures are taken for their destruction, 

 they soon extend over large areas, and will come year after year, 

 stripping orchard and forest of their foliage. Yet if the right 

 means are used, and at the proper time, there are none of our in- 

 sect enemies so easily destroyed, or so completely under our con- 



