Desert Black Swallowtail (Papilio polyxenes coloro)
Desert Black Swallowtail (Papilio polyxenes coloro) on late summer wildflowers.
NPS Photo / Carmen Aurrecoechea
Alt text: a large yellow and black patterned butterfly with blue and orange spots near the bottom of its wings nectars on a flower with many yellow petals.
Original public domain image from Flickr