Feb. 2, 1920 



Lepidoptera at Light Traps 



479 



Table II. — Number and percentage of gravid female Lepidoptera taken at a light trap, 

 Hagerstown, Md., igi8 — Continued 



Species. 



Number 

 taken. 



Number 

 spent. 



Number 

 gravid. 



Percentage 

 gravid. 



Tarache aprica 



Caenurgia erechtea 



Caenurgia crassiuscula 

 Catocala similis. ..... 



Euparthenos nubilis. . . 



Ypsia undularis 



Harpyia borealis 



Datana ministra 



Azelina ancetaria 



Tetrads crocallata. ... . 

 Atteva aurea 



Total 



I 

 94 



37 



I 



3 

 4 



I 



5 



7 



31 

 10 



I 



63 



27 



952 



216 



«736 



100 

 67 

 73 



67 



100 

 100 



ICO 



85-9 

 100 



83-3 



o 77-3 per cent of total number of females. 

 Table III. — Meteorological data, arranged by dates and hours of collections 



1918. 

 May 14-15. 

 17-18. 



21-22. 

 24-25 . 

 28-29. 



31 



June I 



14-15- 



18-19. 

 21-22. 



July 9-10. . . 

 12-13. • 

 16-17. ■ 

 19-20. . 

 23-24. . 

 26-27. . 

 30-31- - 



Aug. 2-3 



6-7 . . . . 

 9-10 . . . 

 13-14. . . 

 20-21. . . 

 23-24- . • 

 27-28... 

 30-31... 

 Sept. 3-4. . . 

 6-7... 



lO-II. . 



13-14- . 

 Total. 



Temper- 

 ature. 



Max. Min 



°F. 



8s 



'F. 



Humid- 

 ity. 



Max. Min. 



P.ct. 



P.ct. 



6s 



Time of flight. 



7 p. m.-x a. m. 



8 p. m.-4a. m. 

 7 p. m.-4a. m. 



do 



7 p. m.-i2 p. m 



7 p. m.-i a. m. 

 7 p. m.-4 a. m. 



....do 



4 p. m.-4 a. m. 



8 p. m.-4 a. m. 



....do 



....do 



....do 



....do 



....do 



....do 



....do 



....do 



....do 



....do 



....do 



....Po 



....do 



....do 



....do 



....do 



....do 



....do 



Remarks. 



Electric current 

 failed 1.05 a. m. 



Heavy fog 12 p. m. 

 to 4 a. m. 



Drizzling rain dur- 

 ing entire period. 



Material taken be- 

 tween 12 p. m. 

 and 4 a. m. de- 

 stroyed. 



Heavy fog 2 a. m. 

 to 4 a. m. 



Rain 7 p. m. to 3 

 a. m. 



a 69.8 per cent of total number of moths. 



b 30.2 per cent of total number of moths. 



