Brimstone - Male and Female

Brimstone - Male and Female

Observation - Brimstone - Male and Female. Description: I thought this was a fairly good example to show the difference between the female and male Brimstone Butterfly. Female left (greenish) - Male right (yellowish) In all my other attempts I have not been able to get the difference to show up that well

I thought this was a fairly good example to show the difference between the female and male Brimstone Butterfly.

Female left (greenish) - Male right (yellowish)

In all my other attempts I have not been able to get the difference to show up that well. These two settled on the same Burdock flower within seconds of each other.