Nepticulidae
1
A
slender sinuous galley leading to a large roundish blotch [6]
Stigmella
sorbi 66
A
gallery throughout the whole of the mine
2
2
Mine
on Wild Service tree (Sorbus torminalis)
3
Mine
on Rowan (Sorbus aucuparia)
4
3
Mine
starts relatively straight, slender gallery, becoming contorted
with linear frass, later widening almost to a blotch, larva pale
yellow [7]
Stigmella
torminalis 106
4
Mine
narrow, less than 1.5mm, frass linear leaving clear margins,
usually confined to a small area, but occasionally follows leaf
margin [7-8]
Stigmella
magdalenae 104
Mine
wider, more than 1.5mm, frass dispersed may be coiled, a long
contorted gallery which may follow leaf margin [6-8]
Stigmella
nylandriella 103
N.B.
Intermediate forms of these mines do occur and these can be difficult
to distinguish.
It should also be noted that Stigmella oxyacanthella has also been known to feed
on Rowan and has a mine similar to S. nylandriella, however occupied mines should
present no problem as S. oxyacanthella feeds during September and October.
Lyonetiidae
Mine a brown circular blotch with the frass forming
darker spiral markings in the centre. Egg laid well away from margin.
On Wild Service tree [8-9]
Leucoptera
malifoliella 260
Mine a long sinuous gallery, often whitish in appearance
and often crossing midrib. The egg is laid inside the leaf being
injected through the epidermal layer. This feature helps to distinguish
it from a Nepticulid mine where the egg is laid on the surface
of the leaf [5+7+9-10]
Lyonetia
clerkella 263
Bucculatricidae
Mine
short contorted, linear black, close to a major vein. Later the
larva eats out windows from upperside (on Rowan and Wild
Service Trees) [7-8]
Bucculatrix
bechsteinella 275
Gracillariidae
1
Mine a blotch on upperside of leaf
2
Mine
on underside of leaf
3
3
Mine
approx 5-8mm long, lower epidermis turning grey or brown; larvae
feeds later in a folded leaf or cone
4
Mine
narrow and approx 20-30mm long, lower epidermis remains green;
larva mines throughout
5
4
Larva
feeds later in a cone on the leaf margin; mainly on Wild Service-tree
[7+8-9]
Parornix
anglicella 303
Larva
feeds later in a folded leaf edge or in a centrally placed tight
pleat that resembles a mine. (On all three species) [7+8-9]
Parornix
scoticella 305
5
Mine
on Wild Service-tree
6
Mine
on Rowan or Whitebeam (Sorbus aria)
7
6
Mine
with lower epidermis having many longitudinal creases; pupae
in very pale brown loose silken chamber; frass in a long line
behind the cocoon (most common species on Wild Service-tree)
[7+9-11]
Phyllonorycter
mespilella 325
Mine
with lower epidermis with one large fold, pupa in a white silk
lined chamber with the frass heaped behind the cocoon (rarely
found on Wild Service-tree) [6-7+9-10]
Phyllonorycter
cydoniella 327
7
Mine
on Rowan
8
Mine
on Whitebeam
10
8
Pupa
in a silk-lined chamber with out a real cocoon with very little
frass
9
Pupa
in a strong whitish cocoon with the frass heaped near the middle
of the mine; mine along midrib or leaf-edge strongly contorting
leaf (commonest species
on Rowan)
[6-7+9-10]
Phyllonorycter
sorbi 324
9
Mine
with lower epidermis having many longitudinal creases; pupae
in very pale brown loose silken chamber; frass in a long line
behind the cocoon (infrequent on Rowan
[7+9-11]
Phyllonorycter
mespilella 325
10
Mine
with lower epidermis having many longitudinal creases; pupae
in very pale brown loose silken chamber; frass in a long line
behind the cocoon (frequent on Whitebeam) [7+9-11]
Phyllonorycter
mespilella 325
Pupa
in a strong whitish cocoon with the frass heaped near the middle
of the mine; mine along midrib or leaf-edge strongly contorting
leaf (rarely found on Whitebeam) [6-7+
9-10]
Phyllonorycter
sorbi 324