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Leaf-mine:
Initially a gallery is made and filled with frass. It is widened
abruptly into a blotch, which absorbs the gallery and may occupy
the whole leaf. The frass may then be dispersed or heaped in the
blotch. A larva may mine more than one leaf before it vacates the
mine (UKMoths).
Corridor,
densely packed with frass, suddenly widening into a blotch that
often occupies the entire width of the leaf, then overrunning the
initial corridor. Frass in the blotch disersed or clumped. The larvae
can leave the mine and restart elsewhere. Pupation outside the mine
(Bladmineerders
van Europa).
The
mine is also described and illustrated in British
leafminers.
Larva:
The
larva is described and illustrated in (Bladmineerders
van Europa).
Pupa:
In a silk cocoon among leaf litter (UKMoths;
British
leafminers).
Adult:
The adult is illustrated in UKMoths.
The male
genitalia, but not the female genitalia (check
for update), are illustrated by the Lepidoptera Dissection Group.
Hosts
in Britain:
Hosts
elsewhere:
Time
of year - larvae: October-April and June-July (UKMoths;
British
leafminers).
Time
of year - adults: The adults fly in two generations, primarily
May-mid June, and mid July-August, but specimens can be found any
time from late April to early October. Adults can often be taken
in a fine meshed net by day, if the foodplants or nearby low vegetation
are disturbed (UKMoths).
Distribution
in Great Britain & Ireland: The distribution of this moth
follows that of its foodplants; rockroses (Helianthemum spp.),
which are confined to limestone and chalk in southern Britain, but
extends onto slightly acid soils in N.E. England and E. Scotland.
It is usually a common moth, wherever its foodplants occur (UKMoths),
including East Kent, East Perth, North Hants, South Aberdeen, South
Wilts, Stafford and Westmorland (NBN
Gateway distribution map - BRERC,
NE,
NESBRC
and SNH). See
also British
leafminers distribution map.
NBN
Grid map:
Distribution
elsewhere: Widespread in Europe including Andorra, Austria,
Belgium, Bosnia and Herzegovina, Bulgaria, Corsica, Crete, Croatia,
Cyprus, Czech Republic, Danish mainland, Estonia, Finland, French
mainland, Germany, Greek mainland, Hungary, Italian mainland, Latvia,
Macedonia, Poland, Portuguese mainland, Romania, Russia - South,
Sardinia, Sicily, Slovakia, Slovenia, Spanish mainland, Sweden,
Switzerland, The Netherlands, Ukraine and Yugoslavia (Karsholt &
van Nieukerken in Fauna
Europaea).
NBN
interactive distribution maps of known host species in Britain and
elsewhere:
Parasitoids
in Britain and elsewhere:
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