Insect | Size | Begin | End | |
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Midges | 18-24 | January 1 | December 31 |
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BWO | 16-24 | January 1 | March 31 |
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Damsels | 6-12 | April 15 | August 31 |
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Ants | 14-18 | April 15 | September 15 |
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Salmonflies | 6-14 | May 15 | July 15 |
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Beetles | 14-18 | May 15 | September 15 |
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Caddis | 12-20 | May 15 | October 15 |
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PMD | 14-20 | June 1 | September 15 |
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Golden Stones | 8-14 | June 15 | August 15 |
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Yellow Sallies | 12-18 | June 15 | August 15 |
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Hoppers | 8-14 | June 15 |
September 25
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Flying Ants | 14-18 | August 15 | September 15 |
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BWO | 16-24 | September 1 | December 31 |
Visit our Colorado Flies by Location page here: