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Leaf
mine: blotch like H.aceris,
but smaller and usually including the tip of a lobe. There is always
an excised hole and the mines go brown (British
leafminers, as H. healyi). The mine is also illustrated
in Nederlandse
bladmineerders.
Larva:
The larva is illustrated in (British
leafminers, as H. healyi).
Pupa:
Outside the mine, inside an excised cut out disc (British
leafminers, as H. healyi).
Hosts
in Britain:
Hosts
elsewhere:
Time
of year - mines: Bivoltine: summer & autumn (British
leafminers, as H. healyi).
Time
of year - adults: Unknown.
Distribution
in Britain: Uncommon (British
leafminers, as H. healyi).
Distribution
elsewhere:
Europe including Austria, Danish mainland, Germany, Switzerland
and Ukraine (van Achterberg in Fauna
Europaea).
Parasitoids:
Unknown.
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