| 
| Table 1.  Study sites and duration of trapping, main study.  Study site designators refer to usage of sites during the overall study.  See map for location of sites. |  |  
| Sites | Area (ha) | Dates trapped |  |  
| Alfalfa |  |  |  |  
| Alf I | 1.4 | May 1972-Mar 1977 |  |  
| Alf II | 1.0 | Mar 1977-Jul 1984 |  |  
| Alf III | 1.0 | Oct 1983-Dec 1989 |  |  
| Alf IV | 1.0 | Jan 1990-Jun 1993 |  |  
| Alf V | 1.0 | Jul 1993-May 1997 |  |  
| Bluegrass |  |  |  |  
| BG Mo & Mp | 2.0 | Jan 1972-Feb 1977 |  |  
| BG Cont | 0.8 | Mar 1977-May 1987 |  |  
| BG Mp | 1.0 | Jun 1987-May 1997 |  |  
| BG Sup | 0.5 | Jun 1977-Dec 1983 |  |  
| Tallgrass |  |  |  |  
| TGTR (72-77) | 2.0 | Mar 1972-Mar 1977 |  |  
| TG Cont | 0.5 | Sept 1977-May 1984 |  |  
| TGTR - (81-87) | 0.7 | Sept 1981-May 1987 |  |  
| TG Sup | 0.5 | Sept 1987-May 1997 |  |  
 |