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Aspen & Poplars (Populus)
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Nepticulidae
Mine wholly in leaf on Black (Populus nigra) and Lombardy Poplar (var.italica)[6-7+9-10] Stigmella trimaculella 73
On Aspen (Populus tremula)[8-10] Stigmella assimilella 74
Mine starts in petiole & finishes in leaf
 
On Aspen (Populus tremula)[7-11] Ectoedemia argyropeza 23
On Grey Poplar (Populus canescens) [7-10] Ectoedemia turbidella 24
On Black Poplar or Lombardy Poplar (Populus nigra and var.italica) [7-11] Ectoedemia hannoverella 24a
Gracillariidae
1 Mine an epidermal gallery, larva feeds later in a cone or blotch
2
  Mine an epidermal gallery throughout, long and sinuous 4
2 Epidermal gallery long, sometimes extending from mid-rib to leaf-margin; teniform mine small about 10mm long; larva feeds later in a cone or fold on the leaf margin [7-9] Caloptilia stigmatella 288
  Epidermal gallery short, usually obscured by later blotch; teniform mine larger, about 13mm long 3
3 On Aspen (Populus tremula) [6+8-9] Phyllonorycter sagitella 366
  On White Poplar (Populus alba), Grey Poplar (Populus canescens) and occasionally other Poplar species [7-8+9-10] Phyllonorycter comparella 365
4 On Black Poplar (Populus nigra) or Lombardy Poplar (var.italica), mine epidermal on the side the egg was laid. Difficult to see, looks as though a snail has crawled over leaf. No visible frass [6+8-9]

Phyllocnistis unipunctella 368

  On White Poplar (Populus alba) or Grey Poplar(Populus canescens), snail trail like mine with dark central frass trail [6-7+8-9] Phyllocnistis xenia 369

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