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Average moth flight
periods and time required for completion of various developmental stages
of the grape leaffolder (Fresno)
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Time required
|
| Brood |
Egg laying period |
Eggs to hatch |
Larval stages |
Pupal stages |
Egg-to-moth emergence |
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| First |
April 2 to May 24 |
10 to 17 days |
3 to 4 weeks |
10 days to 2 weeks |
6 1/2 to 7 1/2 weeks |
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| Second |
June 15 to July 15 |
4 to 5 days |
2 to 3 weeks |
7 to 11 days |
4 to 5 weeks |
| |
| Third |
August 3 to September 5 |
4 to 5 days |
3 to 5 weeks |
overwinter |
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