Susan Rothenberg
(1945 - 2020)
 

Susan Charna Rothenberg was an American contemporary painter, printmaker, sculptor, and draughtswoman. She became known as an artist through her iconic images of the horse, which synthesized the opposing forces of abstraction and representation.

https://en.wikipedia.org/wiki/Susan_Rothenberg

Butterfly
1976
Acrylic on canvas
176.5 x 210.8 cm
National Gallery of Art, Washington
https://www.nga.gov/collection/art-object-page.91009.html