| UK Status 
 Resident. Widely distributed and generally common
throughout the British Isles.
 
 Montgomeryshire Status
 
 A fairly common species throughout the county. Although care should be
taken as there are a few other very similar species, especially E
cirsiana.
 
 Wingspan
:
  M & F, 12-23mm.
 
 Confusion species
 
 The female can be confused with E. cnicicolana.
 
 | Flight time & Voltinity
(Univoltine) 
 Habitat
 
 Open woodland and wet grassy places.
 
 Foodplant
 
 Marsh thistle and common knapweed.
 
 Lifestage data
 
 Stem/root feeder. Eggs laid on foodplant. Larva lives and feeds within
stems and roots, moving to upper part of the stem before pupating.
Pupates in a silken cocoon in stem.
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