Helophorus grandis

    Description

    Length 5.3 to 7.7mm. As with other Helophorus the pronotum has characteristic zig-zag longitudinal grooves. It is pale brown to straw coloured with darker spots on the elytra.

    Similar Species

    The large size means it could only be confused with larger specimens of Helophorus aequalis which can reach 6.3mm. They share similar habitat preferences and can be found together. H. grandis has castellated 'teeth' on bottom edge of the last sternite (in H. aequalis these are much finer and more numerous).

    Identification difficulty
    Habitat

    Freshwater habitats although it does fly and may be attracted to light.

    When to see it

    All year round.

    UK Status

    Widespread and fairly frequent in Britain.

    VC55 Status

    Fairly frequent in Leicestershire and Rutland. There were approximately 190 VC55 records for this species up to March 2015.

    Leicestershire & Rutland Map

    UK Map