Jonathan's picture

Leaf mine in leaves of sowthistle

Observed: 8th June 2009 By: Jonathan
iSpot team
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Leaf mine in Sonchus cropped

I believe these mines are made by a fly larva. They are really striking. See how the mines get broader as the larvae get older and fatter!

Species interactions

No interactions present.


Martin Harvey's picture

one of two

According to the British Leafminers website there are two closely related flies that make these sort of mines on Sow-thistles (they also utilise many other species of plant), and their mines are not distinguishable (they can only be told apart by dissection of adult males). The two species have been lumped together under the aggregate name Chromatomyia 'atricornis'.


Do we know which Sow-thistle this is?

Entomologist and biological recorder

Jonathan's picture

I think it is Sonchus oleraceus

I think it is Sonchus oleraceus

University of Edinburgh and Biodiversity Observatory (OU)

dejayM's picture


Yes, absolutely atricornis.
Before posting my own I visited every post of Chromatomyia 'atricornis' to see if I could learn more - I did. But like every good iSpotter I have returned to agree where possible.
Now my ID is NOT a challenge but an attempt to bring the ID Panel to life. Agreeing to a flawed ID panel is not desirable where there is a good alternative..
So why not look at mine