Anthriscus, cow parsley, keck, bur chervil

fam. Apiaceae

1a blotch mine with conspicuous primary and secondary feeding lines: Euleia heraclei

1b no feeding lines visible => 2

1c galls, etc => 100

2a short, shallow corridor, ending upon a thick vein: Napomyza carotae

2b mine different => 3

3a rather broad corridor, mostly following the leaf margin, indistinctly upper-surface; frass in two rows of grains; larva a maggot: Phytomyza chaerophylli

3b small full depth very transparant mine, not associated with leaf margin; larvae with chitinised head and feet => 4

3a mine more or less corrridor-like; often several mines togther in a vein axil; mine contains little frass; larva pale (white-light green) or yellowish=> 5

3b mine more blotch-like, containing more frass; larva green, head black: Agonopterix purpurea

5a larva: head light brown: Epermenia chaerophyllella

5b head black: Epermenia aequidentellus

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

101 – Nematoda

101a Anguinidae: Ditylenchus dipsaci

102 – Acari

102a Eriophyidae: Epitrimerus anthrisci

103 – Coleoptera

103a Curculionidae: Calosirus terminatus; Lixus iridis

104 – Diptera

104a Agromyzidae: Napomyza lateralis

104b Cecidomyiidae: Kiefferia pericarpiicola; Lasioptera carophila

105 – Hemiptera

105a Aphididae: Dysaphis anthrisci; Semiaphis anthrisci

105b Triozidae: ; Trioza anthrisci, apicalis

107 – rust fungi

107a Pucciniaceae: Puccinia chaerophylli, dolomitica, polygoni-alpini, svendsenii

109 – powdery and downy mildews

109a Erysiphaceae: Erysiphe heraclei

109b Peronosporaceae: Plasmopara chaerophylli

110 – other causers

110a Fungi, Protomycetaceae: Protomyces macrosporus

110b Fungi, Synchytriaceae: Synchytrium aureum

Not included in the key: Liriomyza trifolii; Phytoecia cylindrica