Dancing Flies

I noticed these flies the other day in our prairie.  They are very small–I think they are a type of fruit fly.  Each fly is about the size of the head of a housefly.

I watched them doing a little dance.  It was obviously a visual display of some kind.  The fly would spread its wings and wiggle them, and wiggle its body as well.

Sometimes the fly would show its black butt as well.

Usually when I saw a fly dance I could find another one that was one to two inches away–presumably the intended audience of the fly.  Often that fly would dance as well.

The flies pretty much stayed on ragweed and partridge pea leaves, or on the stems of some species of aster.

This dance on a ragweed leaf seems to involve some kind of vacuuming motion with the fly’s mouthparts.

Advertisements

About the roused bear

Nature photographer from central Iowa.
This entry was posted in diptera, insects and tagged , , , . Bookmark the permalink.

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s