Mexican yellow

This butterfly is bright yellow in color, with tails, and somewhat resembles a wolfs face inside the wings, of which some people call it a wolf-face sulphur. This butterfly was flying in a field full of wildflowers, with nearby supply of their host plant, fern acacia (Acaciella angustissima), but also will use New Mexican locust, Cassia, and Diphysa robinoides. This butterfly may be seen almost all year in Arizona and Texas, and April to November in New Mexico. It strays northward in late summer, rarely reaching Canada. Males will patrol all day looking for females.The larva is green with a middorsal creamy or yellow stripe and a lateral yellow stripe.The Mexican yellow has 3-4 broods per year.