Oxyria, mountain sorrel

fam. Polygonaceae

1a mine a large blotch, generally containing several larvae that spend all their life in the mine; lrvae are maggots => 2

1b mine small, usually containing a single larva; older larvae live free; larva with chitinised head => 3

1c gallen etc => 100

2a larva: mandible with some fine teeth: Pegomya bicolor

2b mandible with ± 3 large teeth; rarely on this hostplant: Pegomya solennis

3a larva without thoracic feet; mine, with or two holes, contains no silk: Hypera rumicis

3b thoracic feet present; mine, without holes, contains some silk => 4

4a mine begins with an epidermal corridor; later a weakly inflated tentiform mine; older larva in a leaf cone: Calybites phasianipennella

4b no initial epidermal corridor; mine flat; older larvae among spun leaves: Cnephasia asseclana

100a Nematoda => 101

100b Acari => 102

100c Coleoptera => 103

100e Diptera => 104

100f Hemiptera => 105

100d Hymenoptera => 106

100g rust fungi => 107

100h smut fungi => 108

100i powdery and downy mildews => 109

100j other causers => 110

107 – rust fungi

107a Pucciniaceae: Puccinia oxyriae

108 – smut

108a MicrobotryaceaeMicrobotryum vinosum