Giant Glasswing

Sachindra, that sounds like a good possibility. The sun can go through the transparent wings and heat up the black abdomen.

Thanks Rieko. The wonders of nature:-)

Thanks dotun, it does look like a black & white where someone painted the antennae.

Thanks Cindy. I saw a few of these butterflies in different areas. Each time was a disturbed habitat. This one was in a weedy section by the side of a trail very close to the lodge. The others were in the weeds in a pull out on the side of a dirt road.

Thanks kdpicturemaker. Those yellow antennae tips really do stand out.

Thanks for the nice comments Reza and António.