EXPERIMENT STATION BULLETINS. 



SOME INSECTS OF THE YEAR 1898. 



BY RUFUS H. PETTIT, ASSISTANT ENTOMOLOGIST. 



Bulletin 175. — Eutomological Department. 



INTRODUCTORY. ■■ ^ -; 



The insects treated in this bulletin are only a small fraction of those which have 

 come under our notice during the year of 1898, and it should be stated further that 

 this report relates only to the summer of that year. 



Notes are given on about twenty species of insects, a list of which will be found 

 on the following page. Bulletin No. 160, published in June of last year, covered twenty- 

 eight species, all different from those here given. A subsequent bulletin probably will 

 take up some other insects which have been troublesome, and thus it is hoped to cover 

 by degrees all the more destructive or otherwise interesting insects of the State. 



It may be well to repeat here the advice given to correspondents last year, which is 

 as follows: 



Whenever information is wanted in regard to any insect, insect worlc, or insecticide, 

 the proper person at the College to address is not anyone whom you may know per- 

 sonally, or by name or reputation, but simply "The Entomologist of the Experiment 

 Station," Agricultural College, INIich. Inquiries addressed in this way are sure to 

 reach this department directly and to receive attention at the earliest possible mo- 

 ment. If addressed otherwise, delay may occur for various reasons, and in some cases 

 the loss of a single day might endanger an entire crop. 



It is well to remember that the most careful description of an insect is seldom 

 as good as the insect itself, while in most cases a mere fragment of the actual insect 

 is better than a page or two of description. Therefore in writing for information about 

 any insect always enclose a specimen if possible, no matter how common or well kno\vn 

 you may believe it to be; and if no sample of the insect can be found, send a sample 

 of its work. In sending specimens by mail, they should be sent in glass or tin if 

 possible, and with some of their natural food if alive. Leaves and fruits wilt rapidly 

 if enclosed in wood or pasteboard boxes, and are also very likely to be crushed or 

 broken in transmission. Small tin boxes of any shape mav be used, and it is well 

 to put a slip of paper with the address of the sender inside the box, in case the outer 

 wrapper should be torn off or defaced. If a letter is enclosed with the specimens, the 

 whole package is subject to letter postage: if the two are sent separately, they should 



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