April, '13] PARROTT AND FULTON: TREE CRICKETS 177 



as scientific men, must recognize the possibility of the one spray and 

 I do not see the slightest danger in calling attention to it. Professor 

 Quaintance reports in spraying against codling moth and curculio, 

 that there was not much difference between trees that received one 

 application and those which received three, and sometimes five ap- 

 plications. In the Hudson Valley we can do more to emphasize the 

 importance of one spray, with a warning that at times it may not 

 be sufficient, rather than to urge several treatments. I may say fur- 

 ther that I have yet to find very serious insect injury from various 

 leaf feeders in orchards that have systematically received one spray 

 annually. 



Mr. p. J. Parrott : Is it not a fact that apple scab is not as injurious 

 along the high lands of the Hudson River as in some portions of western 

 New York? 



Mr. E. p. Felt: These results do not necessarily apply to the west- 

 ern part of the State. 



President W. D. Hunter: The next paper is by Mr. P. J. Parrott 

 entitled, "Notes on Three Tree Crickets." 



NOTES ON TREE CRICKETS 



P. J. Parrott and B. B. Fulton 



Recent years have been very prolific in comprehensive economic 

 entomological treatises of a general nature. As these have come into 

 our possession we were invariably prompted by reason of our interest 

 in tree crickets to turn early to the pages dealing with them. A peru- 

 sal of the subject-matter has impressed us either with the prevailing 

 misconceptions regarding their habits or with an apparent lack of cer- 

 tainty which has led to indefiniteness of statement. The accompany- 

 ing brief notes are here given to call attention in a way that we have 

 not been able to do heretofore to certain habits of Oecanthus niveus De 

 Geer, 0. nigricornis Walk, and 0. quadripunctatus Beut., which are the 

 most common species in plantings of small and tree fruits in New York, 



The species niveus, popularly known as the snowy tree-cricket, 

 deposits its eggs singly, which habit distinguishes it from the foregoing 

 associated forms. In the region about Geneva oviposition is most 

 abundant in apple, plum, cherry and elm, and to a much less extent 

 in peach, walnut, wild crab, hawthorn, witch hazel, chestnut, red oak, 

 maple, butternut, lilac and raspberry. With old trees the eggs may be 

 found principally in the thickened bark about the bases of fruit spurs 

 or branches or in the bark of the larger branches, while with small trees 

 they also occur in the bark of the trunks. In spite of the large numbers 

 of the adults which may be observed in raspberry plantations, other 



