![Image](http://img463.imageshack.us/img463/7219/smallwhitejv7.th.jpg)
Since I last looked, i am not entirley sure. Presume its a small white. is it a male or female?
Many thnaks if anyone could help
The Green veined white is usually easy enough to ID. Look for the green veins on underside to ID. But if your not close enough, it may look like a small white. We have created this identification image to help you. Note: Bottom image of small white does not show the forked vein which is on the top vein beside the edge of the top wing on underside.
A Green Veined White usually has more prominent vein markings than Small White but apart from this, they do look very similar. They both fly in similar locations from each other, both eat similar foodplants and are both 25mm in size. They both have very similar uppersides and both species, having same size and number of spots on upperside of wings in each sex, but small whites spots and darker markings (not veins) are more prominent. The Green Veined White, rarely is a pest of cultivated crucifers.