Cabbage-stem Flea Beetle - Psylliodes chrysocephala

    Alternative names
    Psylliodes chrysocephalus

    Length 3 to 4.7 mm. A rather variable flea beetle. The elytra may vary in colour from dark blue or green through to black, though the typical form is dark metallic blue. Variety anglica is yellow to pale brown. It has the thickened thighs that are typical of flea beetles.

    Identification difficulty
    ID guidance
    • hind tarsus joins the tibia before the end (all Psylliodes)
    • 3.4-4.7mm, elongate oval
    • head brown
    • pronotum with only fine punctures

    Feeds on plants in the Brassica family including Cabbages and Oil-seed Rape but can be found on almost any vegetation.

    When to see it

    April to November, but peaking August to October.

    Life History

    The adults chew holes in the leaves. The larvae usually mine the lower petioles, moving from ageing to healthy tissue, but will move to the stem and destroy the growing point if larval numbers are large or if the rosette is poorly developed.

    UK Status

    Widespread and common, particularly in the southern half of Britain.

    VC55 Status

    Common 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