Blue Shieldbug - Zicrona caerulea


    Length 5-7 mm. A medium-sized dark shieldbug with a deep blue-green metallic sheen and a dark wing membrane. The nymphs can resemble early instars of Troilus luridus but the legs of Zicrona caerulea are all dark rather than mottled and the head and pronotum are distinctly bluish.

    Identification difficulty

    It occurs on low vegetation in many habitats, including heathland, grassland and woodland rides.

    When to see it

    Adult: All year - mainly July to September

    Life History

    This bug overwinters as an adult and eggs are laid in the spring. New adults are mainly found from July onwards and there is usually one generation per year. A predatory species, favouring the larvae of certain leaf beetles.

    UK Status

    It is widespread throughout Britain, particularly in the north, although absent from Ireland.

    VC55 Status

    Occasional in Leicestershire and Rutland.

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    Leicestershire & Rutland Map

    MAP KEY:

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

    UK Map