Monday, August 1, 2016

Dot-tailed Whiteface

We’ve seen a lot of Dot-tailed Whiteface this summer. One of the first was this male, on 6 June 2016, in the Carleton arboretum.
On the same day, 6 June 2016, I found this whiteface at our water feature. I knew it was a Dot-tail, but I was surprised when Scott King told me that it is an andromorph female. Scott says andromorphs, when females look like males, are relatively uncommon in this species. The hypothesis is that females that look like males still get the job done, but with a whole lot less hassle from the males.
This final photo is of an immature male—note the yellow bands on the top of his abdomen. We found him on our 21 June 2016 hike at the Lebanon Hills Regional Park. You can clearly see his white “face.” On this day we kicked up swarms of dragonflies. This one is on Erika’s shoe. I will always remember Erika’s walking up the path, with dragonflies scattering in all directions.

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