Quote:
Originally Posted by JRsbugs  Hi Roger,
I had Chrysotoxum festivum last year and there's none on the map for my area near Lincoln. I had it verified by experts on diptera.info. Diptera.info - Discussion Forum: Chrysotoxum festivum?
This would suggest the maps are not a totally accurate indicator as some just haven't been noticed.
Janet  |
But festivum is known to occur at least as north as Yorks and therefore virtually assured in Lincs. That's a completely different from the case of verralli that's never been found in the south-west as far as I'm aware.