Isotoma caerulea

    Description

    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
    Habitat

    Damp places. 

    When to see it

    Autumn-spring

    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

    UK Map