Table 4. Catch indices* for targets corrected to a uniform area of 1 m2.
| G. swynnertoni | G. pallidipes | |||||||
| Target type | Actual catch | Catch normalised to 1 m2 | Actual catch | Catch normalised to 1 m2 | ||||
| Flies/m2 | Catch index | Flies/m2 | Catch index | Flies/m2 | Catch index | Flies/m2 | Catch index | |
| 1×1 m square blue/black | 99.29 | 1.0 | 99.29 | 1.0 | 64.53 | 1.00 | 64.53 | 1.00 |
| 1×1 m square blue/black/black | 84.79 | 0.85 | 84.76 | 0.85 | 69.60 | 1.08 | 69.60 | 1.08 |
| 0.55×0.9 m oblong blue/black/blue | 48.12 | 0.48 | 96.42 | 0.97 | 39.54 | 0.61 | 79.08 | 1.23 |
| 0.55×0.9 m oblong all blue | 34.22 | 0.34 | 68.44 | 0.69 | 41.62 | 0.64 | 83.24 | 1.29 |
| 0.5×0.5 m square blue/black/blue | 18.42 | 0.19 | 73.64 | 0.74 | 8.06 | 0.12 | 32.24 | 0.50 |
| 0.5×0.5 m square all blue | 17.12 | 0.17 | 68.48 | 0.69 | 10.60 | 0.16 | 42.40 | 0.66 |
All indices calculated against a standard blue-black 1 m2 target (using detransformed mean daily catches).