Ephemerella needhami (Little Dark Hendrickson) Mayfly Dun Pictures

i think that i fish a fairly good hatch of these on the little j near the town of spruce creek. the hatch is pretty good in the late morning during the early summer. i catch it every year. i always thought they were "blue quills" onacounta their coloration and size. in any event, the fish eat my blueuill emergers and spinners pretty well. is there a major difference between these and paralepts? hatching behavior or any other thoughts?

Jason,

Somehow, I don't think this is Serratella--it seems too large (especially for a male), and the "S" with which I'm familiar have very dark wings. I thought I'd call attention to it in the hope that someone might be able to offer some insight and, perhaps, clear up the mystery.