1922] Ainslie: Crambiis laqneatellus Clem. 127 



of a specimen at light at Denver, Colo., on August 16, seem to 

 indicate that there is a slight tendency toward a second genera- 

 tion. This is corroborated by the results of our rearing experi- 

 ments, reported in more detail later, where moths matured 

 in September from eggs laid the previous May. In general, 

 however, it may be assumed that there is but a single annual 

 generation, the period during which the moths are present in 

 any given locality covering about five weeks. The following 

 table gives the dates within which the moths have been recorded 

 in the respective states. 



Illinois— May 14-May 28. New Jersey— May 18- June 24. 



Iowa— June 6- June 16. New York— May 20-June 24. 



Kentucky— May 23- June 21. Ohio— June 9. 



Maryland — May 8-May 28. Pennsylvania — June 14- June 30. 



Michigan — June 6- June 14. Tennessee — April 24-May 31. 



Minnesota — June 6. Wisconsin — June 15. 



New Hampshire — June 2. District of Columbia — May 20. 



This list is very incomplete, but will serve as a starting 

 point for further observations. 



The larvag have never been taken in the field and nothing 

 is known of their seasonal habits. Judging from others of 

 this genus it may be predicted that the larvae feed and grow 

 during the late spring and summer, reach their growth by the 

 end of the summer season and then remain quiescent in their 

 cocoons during the winter, pupating ten days or two weeks 

 before their emergence in the spring. Whether they feed at 

 all in the spring or complete their growth in the fall is a fact 

 that will have to be ascertained by further studies. 



ECONOMIC HISTORY. 



Unless further observations bring to light something entirely 

 new in the economy of this species, it must be listed as of little 

 or no economic importance. It has once been charged with 

 injury but it seems certain that it was a case of mistaken 

 identity or bad companions. F. M. Webster (1896) found the 

 moths abundant in association with those of Crambus trisectus 

 and C. mutabilis a short time after crambid larvee had devastated 

 fields of grass and small grain in northern Ohio in 1896. While 

 laqueatellus larvae, if present in numbers, might somewhat 

 intensify the damage in such a case, it is very much more 

 probable that the injury should be laid to the other two species, 



