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  - Archytas aterrimus - female

- Archytas aterrimus - Female
Newark, New Castle County, Delaware, USA
October 23, 2015
the bristles on the rear end are washed out, they're a lot longer

Images of this individual: tag all
  - Archytas aterrimus - female   - Archytas aterrimus   - Archytas aterrimus - female   - Archytas aterrimus - female


What happened to the pages of
What happened to the pages of the subgenera?

I must have renamed it.

doublecheck on "female"
only because I didn't notice it before... want to make sure you did that and it wasn't something stupid I did. :o)

The shot from the front and side shows most clearly the "proclinate orbital bristles" next to the eyes that can be used to determine sex in this genus. In a few genera males have them too.

Do you know accurately how big the fly was? Maybe you can tell from the flower, if the flower has a consistent size.

accurate, no . . .
Much smaller than a bumble bee, which I thought it was from a distance (only because it was such a big fly). In case it matters, several pictures I have show the fly with greenish/bluish iridescence.

Since there are only 5 blossoms on the plant it wasn't difficult to find the same flower. I brought the plant in for a photo op. I doubt the flower, as a whole, has changed in size but I guess it's possible the disc (yellow) has swollen or shrunk, not to mention the matter of the angle of the fly and the angle of the flower. I suppose I could give a wag of 17/18mm and still be way off -- but that's not helpful, I guess, all things considered.

14-15 mm
Seems to be 14-15 mm, which is a likely size for Archytas aterrimus and too large for A. instabilis.

Moved from Archytas.

Moved from Flies.

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