![Sad :(](./images/smilies/icon_sad.gif)
However, I think the foodplant for the two species is different, so finding caterpillars might be easier.
Are there any other simple distinguishing features to look for?
Dave
Thank you for your assessment Guy. It was obviously always going to be a long shot but stranger things happenPadfield wrote:There's definitely no fork, which leaves mannii in the picture. It's presence is decisive (definitely rapae/napi) but its absence inconclusive. The scaling on the unh is not particularly dense - much more like rapae - but this feature is actually most useful in the spring brood. In the summer brood the scaling is closer in density and pattern to rapae. The wing shape suggests rapae more than mannii (which is typically more rounded), but this again is very variable.
I'd say the percentages are on this being rapae, given all the circumstances. But if I knew the picture were taken in my back field my conclusion would be different ...
Guy