The distribution area of Philopotamus montanus extends
over whole Europe eastwards to NW- and N-Russia.
The aquatic stages inhabit headwaters, brooks, rivulets and small
rivers in uplands, but do not occur in the Alps (Botosaneanu &
Malicky 1978, Braukmann 1987, Pitsch 1993, Waringer & Graf 1997).
They are typically found in the rapids of headwaters and in tributaries
where water runs vertically down through piles of boulders (Edington
& Hildrew 1995) since this species needs moderate to high current
Larvae are filter-feeders, spinning nets to filter fine particles
and diatoms from the water (Waringer & Graf 1997, Graf et al.
Adults are on the wing from January to November (Waringer &