May 29, 2010

emergence

A precipitous hatch of mayflies have taken over the Roughfisher Command Post as of late. A stretch of warm daytime temperatures coupled with low dewpoints have triggered a solid emergence of mayflies during the low light periods. As a result, we have been greeted each morning with a plethora of duns and spinners gracing the windows, screens, and siding of the command center. I took this as a great opportunity to break out the Canon and grab a few macros of these intriguing indicator species.

Maccaffertium vicarium (March Brown)

March Brown dun, ♂
March Brown dun, ♂
March Brown dun, ♂
Callibaetis ferrugineus (Speckled Dun)

Callibaetis dun, ♀
Callibaetis dun, ♀
Callibaetis dun, ♀