Biology Reference
In-Depth Information
1034
1035
1034
Larva of larch sawfly (
Pristiphora wesmaeli
).
1035
Mine of oak leaf-mining sawfly (
Profenusa pygmaea
) on
Quercus
.
1036
1037
1036 Larva of geranium sawfly (
Protemphytus carpini
).
1037
Geranium sawfly (
Protemphytus carpini
) damage to
foliage of
Geranium
.
1038
1039
1038
Larva of iris sawfly (
Rhadinoceraea micans
).
1039
Larva of
Scolioneura betuleti
.
the larvae then feeding gregariously. Fully grown larvae
eventually vacate the leaf mine to pupate in the soil.
Occupied mines occur in June and early July, and again
in the autumn.
DAMAGE
Attacked leaves may contain one or several mines
which, if numerous, destroy much of the leaf tissue;
heavily infested trees appear brown.
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