#2
Dear Roger
it looks very much like Tipula scripta (see
http://nlbif.eti...._1957b.pdf figure 161, page 249). There is a more recent version of Theowalds' work, but I couldn't find downloadables.
#3
edit:
I have verified your larvae using Theowald (1967) and it is definitely Tipula (Vestiplex) sp. and although it looks very similar to T.scripta I cannot exlude T. excisa or T. montana from your photo's.
If the dorsal lobes are slightly curved towards the head than it is scripta, if not (just straight) than one of the other.