Posted by Sundew on 03-07-2020 15:23
#5
Ah - that's very interesting! Van Veen's key likewise says for
P. caesia: "Male: abdomen in top view black with silverish dust only at the side margin", which I found to be incongruous with my fly. Also the habitat "little stream marshes at the start of streams" did not match, as my fly was on a woody hill with no trace of a stream anywhere. The flight period "June" of
P. caesia seemed too late for my fly that was seen on May 15th.
P. melaleuca was said to fly already in May. - The linked picture of
P. melaleuca, however, looks very different (recalling
Acrosathe), so, relying on your great experience, I gladly accept
P. caesia - many thanks indeed!
Edited by Sundew on 03-07-2020 15:30