A Guide to Dates of Mayfly Hatches in CNY
A number of queries have been made about Mayfly hatches in the Central New York area. What follows is an approximate time of the individual hatches. Each year is a bit different and the accuracy of the following information can not be guaranteed.
| Type | Dates | Size | Description |
| Blue Quill | April 20 - May 10 | 16-18, 2x long | Mahogany abdomens, clear wings |
| Hendrickson | April 25 - May 10 | 12-14, 2x long | Females pinkish-tan, males reddish brown, blue gray wings |
| Blue Wing Olive | May 1 - June 30 | 14-20, 2x long | Olive body, gray wings |
| Light Hendrickson | May 15 - June 15 | 14-16, 2x long | Tan to pale yellow, light gray wings |
| March Brown | May 20 - June 10 | 10-12, 2x long | Brown, yellowish bely, speckle gray-brown wings |
| Green Drake | June 1 - 15 | 8-10, 4x long | Chalky white, black veined wings |
| Pale Evening Dun | June 5 - July 1 | 16-18, 2x long | Bright yellow |
Source: Syracuse Post Standard - Mike Kelly