THE SEASONAL DISTEIBUTION OF THE AKMY- 

 WOKM MOTH AT RALEIGH 



BY C. S, BEIMLEY 



During the summer of 1914: there was an outbreak of the 

 army-worm (Leucania unipuucta) in I^orth Carolina and 

 at the suggestion of Mr. Franklin Sherman, our State ento- 

 mologist, I kept a record of the number of moths of this 

 species caught in a "sugar" baited moth trap which I run 

 more or less every summer. The idea was to get some data as 

 to the variation in numbers of the species, as well as to how 

 late it flew in the fall and when it appeared again in the 

 spring. 



Before these observations my records simply showed that 

 the moths of this species occurred at Raleigh from early 

 May to late !N"ovember without a break. 



The observations were begun on August 13, 1914, and 

 have continued till the present time (May 7, 1915), the 

 moths all being caught in a modification of the old fashioned 

 fly trap, but made larger and of curtain net instead of wire 

 cloth. This trap is suspended from the limb of a tree and is 

 baited usually with a mixture of molasses and water allowed 

 to ferment and placed in a small tin bucket covered with net 

 to prevent the moths drowning themselves in it. 



I was not able to take time to count the moths on every 

 night the trap was set and during the winter the trap was 

 only set on warm nights when there was a likelihood of 

 moths of some species being on the wing. 



CATCH OF MOTHS 



Per cent of 

 Date Army-worm Moths Other Moths Army-worm Moths 



61 21 75 



53 11 84 



27 10 n 



74 29 71 



77 25 75 



15 7 68 



