Large Lace-border
Scopula limboundata
July 24, 2002

This is a geometrid in the subfamily Sterrhinae (also known as the Waves) that includes bird dropping mimics. 

Where in the species Antaeotricha schlaegeri, the moth resembles a fresh dropping, the Lace-border appears more like an old splat on a leaf.  

Or, a little doily.

Cut in half.