Food Plant: Achillea filipendulina, Achillea millefolium, Achillea ptarmica, Achillea sibirica, Ageratum houstonianum, Anthemis cotula, Arctium sp., Arctium lappa, Artemisia sp., Artemisia absinthium, Artemisia vulgaris, Aster novi-anglicae, Bidens cernua, Bidens tripartita, Centaurea sp., Centaurea cyanus, Centaurea montana, Centaurea jacea, Centaurea nigra, Centaurea scabiosae, Chrysanthemum sp. Chrysanthemum maximum, Chrysanthemum morifolium, Chrysanthemum parthenium, Chrysanthemum segetum, Cicerbita sp., Cichorium intybus, Cirsium arvense, Cirsium vulgare, Crepis sp. Dahlia sp., Echinops banaticus, Erigeron canadensis, Eupatorium sp., Eupatorium canadensis, Galinsoga parviflora, Gazania sp., Helianthus rigidus, Hieracium sp., Hieracium umbellatum, Lactuca serriola, Lactuca virosa, Lapsana sp., Leucanthemum sp., Leucanthemum maximum, Mycelis muralis, Picris echioides, Rudbeckia sp., Senecio sp., Senecio aquaticus, Senecio cruentatus, Senecio jacobaea, Senecio squalidus, Senecio sylvaticus, Senecio vulgaris, Sonchus sp., Sonchus arvensis, Sonchus asper, Sonchus oleraceus, Sonchus palustris, Sonchus scorpioides, Tanacetum parthenium, Tanacetum vulgare, Taraxacum sp., Taraxacum officinale and Tripleurospermum maritima x inodora.

Mine: See C. syngenesiae (Hardy) and C. horticola (Goureau).

Notes: There are two polyphagous miners which form indistinguishable mines on a large number of plant species. These are Chromatomyia syngenesiae and Chromatomyia horticola and together these comprise C.'atricornis'. The adults are distinguishable only by the male genitalia. Both from pupae in the mine and the mines are long and twisting.
Chromatomyia syngenesiae are almost exclusively found on the Asteraceae and British records of C.syngenesiae, horticola or 'atricornis' on hosts other than Asteraceae in Britain, are assumed to represent horticola. Records on Asteraceae hosts which are not based on genitalia examinations may be either C.horticola or C.syngenesiae.
Mines shown on Sonchus oleraceus (Smooth Sow-thistle)

Data: 30.vi.2007, Fleet, Hants, VC12

Image:© Rob Edmunds