The Other Color

A couple of days ago I posted a photograph of a female eastern tiger swallowtail.  I should have been a little more specific in my description–it was the yellow form.

Eastern tiger swallowtails have two different forms (or morphs) of females–one is yellow and black, as are all males of the species.  The other form is all black, like the one shown here.

8--18-140014

It can look very black, or stripes can appear, depending on how the light hits it.

Scientists explain it in terms of mimicry.

Advertisements

About the roused bear

Nature photographer from central Iowa.
This entry was posted in butterflies 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