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Leaf-mine:
Winding full depth corridor up to 15 mm long with a long larval
chamber. Black frass in a central line, broad, but leaving a clear
zone at either side. Characteristically the corridor has 2-4 short,
frass-free, side branches (diverticula) occurring at points where
the main corridor makes a sharp turn. The first one often is interparenchymatous
tissue and difficult to see; the following turns usually have opening
in the lower epidermis at their end. Older larvae live free on the
leaf, creating windows; the exit hole is in the underside of the
leaf (Hering, 1957a; Langmaid,
Porter & Collins, 2007a) (see Nederlandse
bladmineerders). The mine is also illustrated in British
leafminers.
Larva:
Mining larva with a black ventral spot on each abdominal segment.
Free-living larva dull green above, pale yellow laterally and ventrally
with some fragmented purplish subdorsal lines (Langmaid, Porter
& Collins, 2007a) (see Nederlandse
bladmineerders). The larva is illustrated in British
leafminers.
Pupa:
In
an oval cocoon that, contrary to what is usual in Bucculatrix,
is not ribbed lengthwise (Langmaid, Porter & Collins, 2007a)
(see Nederlandse
bladmineerders).
Hosts
in Britain:
Hosts
elsewhere:
Time
of year - mines: Unknown.
Time
of year - adults: Unknown.
Distribution
in Britain: British Is. (Karsholt & van Nieukerken in Fauna
Europaea) including Hants (Dogmersfield and Odiham Common),
Suffolk and Surrey (Farnham) (British
leafminers), Isle of Wight, North Essex and South Devon (NBN
Gateway distribution map - NE).
See also British
leafminers dsitribution map.
Distribution
elsewhere: Widespread in Europe including Austria, Belarus,
Belgium, Croatia, Czech Republic, Estonia, Finland, French mainland,
Germany, Greek mainland, Hungary, Italian mainland, Latvia, Lithuania,
Luxembourg, Macedonia, Norwegian mainland, Poland, Romania, Russia
- Central, East and Northwest, Sardinia, Slovakia, Sweden, Switzerland,
The Netherlands, Ukraine and Yugoslavia (Karsholt & van Nieukerken
in Fauna
Europaea).
Parasitoids:
Unknown.
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