Aremonia, bastard-agrimony

fam. Rosaceae

1a mine shallow, greenish when lighted from behind; larva a maggot: Agromyza idaeiana

1b mine full depth, not greenish in transparancy; larva with chitinised head => 2

1c galls, etc => 100

2a corridor till the end: Stigmella aurella

2b corridor widens into definite blotch => 3

3a mine begins at a shining egg shell; then a contorted corridor, that finally widens into a blotch; larva without feet: Ectoedemia agrimoniae

3b no egg shell to be seen; the mine widens almost immediately to a blotch; larva with well-developed thoracic legs: Fenella nigrita

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: Pucciniastrum agrimoniae

109 – powdery and downy mildews

109a Erysiphaceae: Podosphaera aphanis