Conium, hemlock

fam. Apiaceae

1a mine < 1 cm long, full depth; larva with feet and chitinised head: Epermenia chaerophyllella

1b mine > 1 cm, upper-surface; larva a maggot => 2

1c galls, etc => 100

2a mine a primary blotch with conspicuous primary and secondary feeding lines: Euleia heraclei

2b mine a corridor or a secondary blotch; feeding lines not apparent => 3

3a puparium formed in the mine, in a, generally lower surface, pupal chamber: Chromatomyia horticola

3b puparium formed after the mine has been left => 4

4a larva leaves the mine through an upper-surface exit slit: Phytomyza conii

4b exit slit lower-surface => 5

5a larva with a frontal appendage; frass grains ill-defined; first part of the gallery lower-surface: Phytomyza chaerophylli

5b no frontal appendage; frass grains sharply delimited; gallery upper-surface throughout: Phytomyza pastinacae

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

103 – Coleoptera

103a Curculionidae: Lixus iridis

104 – Diptera

104a Cecidomyiidae: Kiefferia pericarpiicola; Lasioptera carophila

107 – rust fungi

107a Pucciniaceae: Puccinia conii, Uromyces graminis

109 – powdery and downy mildews

109a Erysiphaceae: Erysiphe heraclei; Leveillula taurica

109b Peronosporaceae: Plasmopara conii

Not included in the key: Phytomyza aurei, coniopais.

15/10/2015