Good lord, Marc gets everywhere. I'm just about to do some of his micros. Ina, you can see the copper spreading smoothly up the wing towards the base, so yes it is Svennson's.
Thank you Peter. That was my thought. I have difficulty doing it Marc's way so have to anaesthetise them....not sure I like that either, but when I have recorded a species once at a site I think it's better than agg.