I have to say it somewhere

"We have been lucky enough to encounter Hemeroplanes twice. Our first encounter happened on a cool, drizzly night during the month of August. It was toward the end of the night and we were headed towards town to drop off our guests. As we reached the suspension bridge which crosses the Agujitas River, I spotted a large caterpillar feeding on a plant about a meter off the trail.

We were immediately stricken by it’s size. Having never before seen this species, we bent down the leaf on which it was feeding to better observe and photograph it. At first glance, this large caterpillar was quite ordinary.

As Tracie lowered the caterpillar's branch and I snapped shots off with my camera, we realized that the caterpillar was changing....becoming something entirely different."

http://www.thenighttour.com/alien2/hemeroplanes.htm