Caddis · Aquatic insect
Murrough (Great Red Sedge)
Phryganea grandis
Size
18–25mm
Hook size
#8–6
Hatch window
Season June–AugustPeak time 20:00–23:00
Water temperature
17° peak
13°22°
Hatches from 13°C, peaking at 17°C, tailing off by 22°C.How fish feed on it
The largest British sedge at around 25mm, and on the Irish loughs — where it is the murragh — one of the great set-piece evenings of the season. Late May into July, late afternoon and early evening. The adults skitter across the surface trying to reach land, and that movement is the whole trigger: a fly given some life will be hit hard, where the same fly sitting still is often ignored.
Flies that imitate this
Murrough
Red Sedge
G&H Sedge
Deer Hair Sedge
Ecology
Where you'll find this
- British IslesCommon
- Continental EuropeOccasional
- Atlantic fringeOccasional
- ScandinaviaScarce
Common Occasional