Thalictrum, meadow rue

fam. Ranunculaceae

1a blotch mine => 2 *

1b corridor mine => 3

1c galls, etc => 100

2a mine small, begins in the tip of a leaf segment at a spot that is opaque in transparancy: Phytomyza thalictricola

2b mijn large, beginning at an opaque spot in the centre of the leaf: Phytomyza aquilegiae

3a frass in the first part of the mine in loose grains; mine broad, < 7 cm long: Phytomyza minuscula

3b frass in the entire mine in strings, > 7 cm long, beginning narrow, gradually widening => 4

4a corridor begins at lower surface, epidermally, later becoming upper-surface: Phytomyza albifrons

4b corridor upper-surface over its entire length: Liriomyza thalictri

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

102 – Acari

102a Eriophyidae: Phyllocoptes jaapi, thalictri

105 – Hemiptera

105a Aphididae: Aphis thalictri; Longicaudus trirhodus

108 – smut fungi

108a Entylomataceae: Entyloma thalictri

108b Urocystidaceae: Urocystis sorosporioides

109 – powdery and downy mildews

109a Erysiphaceae: Erysiphe aquilegiae var aquilegiae, aquilegiae var ranunculi; Leveillula taurica; Podosphaera thalictri

109b Peronosporaceae: Plasmoverna alpina

110 – other causers

110a Fungi, Synchytriaceae: Synchytrium aureum

* See also the recently described Phytomyza camuna.