Isotoma caerulea


    Juveniles are usually green, adults more dark blue. Two pairs of manubrial teeth, but can only reliably be identified by examination of setae on the dens - I. caerulea has a larger macroseta on the outside of the 2nd pair up the manubrium, while I. anglicana has the inner of these 2 macrosetae larger than the outer and I. caerulea has 2 basal dorsal setae on the dens, I. anglicana has 3.

    Identification difficulty

    Damp places. 

    When to see it


    UK Status

    True status in Britain is unknown, the species appears to be under-recorded due to identification confusion. 

    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