Seasonal flight periods and suggested treatment dates for clearwing borers, based on pheromone trapping in Lexington, Kentucky, 1979-82.
| Borer species | Principal hosts | Average date to | No. of treatments (n) and recommended trt date (s) | ||
|---|---|---|---|---|---|
| First catch | Peak catch(es) | 90% catch | |||
| Lilac borer | lilac, privet ash | April 26 | June 9 | June 25 | (1) May 6-10 |
| Dogwood borer | flowering dogwood | May 21 | June 7 and Aug. 22 | Sept. 4 | (1) May 31-June 4 |
| Peachtree borer | Prunus spp. | June 1 | Aug. 9 | Aug. 29 | (2) June 18-24 July 30-Aug. 4 |
| Lesser peachtree borer | peach, plum flowering cherry | May 1 | Sustained heavy flight | Sept. 1 | (3) May 11-15 June 22-26 Aug. 3-7 |
| Oak borer | oak | May 18 | May 24 | June 11 | (1) May 28-June 1 |
| Podosesia aureocincta | ash | Aug. 10 | Sept. 1 | Sept. 16 | (1) Aug. 20-24 |