Table 1. Dates of first and final capture of A. segetum and duration of capture period in the eleven years on Beihuang Island in northern China.
| Year | Date of first capture (n)ª | Date of final capture (n)ª | Duration of capture(d) | Date of peak catches (n)ª |
|---|---|---|---|---|
| 2003 | 23 May (1) | 15 September (1) | 115 | 06 August (10) |
| 2004 | 14 May (1) | 20 October(2) | 159 | 19 September (138) |
| 2005 | 08 May (3) | 08 October (14) | 153 | 14 July (142 |
| 2006 | 17 May (7) | 20 October (2) | 156 | 27 September (35) |
| 2007 | 02 May (6) | 17 October (14) | 168 | 20 July (118) |
| 2008 | 07 May (2) | 12 October (4) | 158 | 29 July (236) |
| 2009 | 28 April (1) | 01 October (30) | 156 | 24 September (185) |
| 2010 | 07 May (4) | 17 October (5) | 163 | 15 July (34) |
| 2011 | 06 May (5) | 03 October (55) | 150 | 24 May (180) |
| 2012 | 06 May (1) | 25 October (10) | 172 | 24 July (57) |
| 2013 | 05 May (1) | 11 October (3) | 159 | 15 July (20) |
ª The numbers of A. segetum moths captured are given in parentheses next to the date of capture.