Posted by Andy Pay on 31-08-2016 13:16
#1
This was in Cornwall, UK at SW695171 yesterday. I don't recall seeing one of these before. Can anyone tell me how I can find out the local status?
Thanks.
Edited by Andy Pay on 31-08-2016 13:24
Posted by Andy Pay on 31-08-2016 16:48
#3
Thanks Tristram. To what extent are these maps an accurate reflection of the distribution?
Posted by tristram on 01-09-2016 14:09
#4
The NBN Gateway maps are to some extent a function of the distributions of both diptera and dipteriists and for some flies this is fairly obvious (for example the big cluster in the midlands in this map https://data.nbn.org.uk/Taxa/NBNSYS0000030349
is probably just the result of a particularly active recorder in Nottinghanshire!). However, the map for N. ferox does seem to show a pretty clear bias towards the south-east of England and an avoidance of the highland areas in the south-west and in Wales. I would expect this to be fairly rare in Cornwall but with global warming they might be becoming more common.
Edited by tristram on 01-09-2016 14:10