Allium, chives, onion, leek, ramsons etc.

fam. Amaryllidaceae

1amine on broad-leaved species (e.g. Ramsons, A. ursinum): Cheilosia fasciata

1bmine on species with linear or tubular leaves (Onion, Chives etc) => 2

1c gallen etc => 100

2alarva with head and thoracic feet => 3

2blarva a maggot => 4

3a larva with abdominal prolegs: Acrolepiopsis assectella

3b larva without prolegs: Oprohinus consputus

4aat the beginning of the mine an oval egg shell; larval mandible with 1 tooth: Hydrellia griseola

4bno egg shell; mandible with 2 teeth => 5

5a larva: rear spiraculum tapering into a sharp point: Scaptomyza pallida

5b rear spiraculum rather fist-shaped => 6

6apuparium is formed in the mine => 7

6bpuparium formed after the larva has left the mine => 8

7alarvae 3 mm at maximum; puparium right under the surface, the anterior spiracles penetrating the epidermis: Chromatomyia horticola

7blarvae 5-8 mm; puparium sunken deeper into the plant tissue, anterior spiracles not penetrating: Phytomyza gymnostoma

8alarva: anterior spiraculum with 7, posterior with 9 papillae:Liriomyza cepae

8blarva: anterior spiraculum with 9-13, posterior with 14-15 papillae: Liriomyza nietzkei

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

101b Meloiogynidae: Meloidogyne hapla, naasi

102 – Acari

102a Eriophyidae: Aceria tulipae

108 – smut fungi

108a Urocystidaceae: Urocystis cepulae

108b Ustilaginaceae: Ustilago ceparum

109 – powdery and downy mildews

109a Erysiphaceae: Leveillula allii

109b Peronosporaceae: Peronospora destructor

110 – other causers

110a Fungi, Capnodiales: Cladosporium allii, allii-cepae

110b Fungi, Glomerellaceae: Colletotrichum circinans

110c Fungi, Physodermataceae: Physoderma allii

Not included in the key: Liriomyza huidobrensis; Scaptomyza graminum.

02/05/2017