Portevinia maculata

    Alt Name
    Ramsons Hoverfly

    A medium-sized black hoverfly related to Cheilosia with large grey dust-spots on tergites 2 and 3 of the males.

    Identification difficulty

    Often present at good stands of Ramsons in woods but sometimes absent for reasons that are unclear. It can also use Ramsons in more open locations such as parkland and open woodland in the north and west and abroad it will use other Allium species such as Three-cornered Garlic.

    When to see it

    May and June.

    Life History

    The larvae develop in the stem bases and bulbs of Ramsons and the very sluggish adults can normally be observed sitting on the leaves (or on nearby foliage), particularly in May when the plant is flowering.

    UK Status

    This is a widespread but localised fly.

    VC55 Status

    Thought to be uncommon or under recorded in Leicestershire and Rutland.

    Leicestershire & Rutland Map

    MAP KEY:

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

    UK Map