Phryganea grandis


    Length 18 to 28 mm. The female is the largest British caddisfly and has a dark stripe on the forewing which is not present in the male. The male is also the smaller of the sexes.

    Identification difficulty

    Around still and slow moving water. It is sometimes attracted to light.

    When to see it

    May to August with a peak in early July.

    Life History

    Breeds in still and slow moving water including large lowland rivers and canals with plenty of submerged vegetation. The larval case in constructed from spirally arranged plant fragments.

    UK Status

    Widespread and fairly frequent in much of England, but fewer records from Scotland and Wales. 

    VC55 Status

    Status in Leicestershire and Rutland not known.

    Leicestershire & Rutland Map

    MAP KEY:

    Yellow squares = NBN records (all known data)
    Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

    UK Map