Bryonia, bryony

fam. Ccucurbitaceae

1a small, full depth mine of indefinite shape; larva with a recognisable head and thoracic feet: Cnephasia incertana

1b evident, upper- or lower-surface corridor, not unusually small; larva a maggot => 2

1c galls, etc => 100

2a pupation within the mine in a, generally lower-surface, pupal chamber; frass in well-separated grains: Chromatomyia horticola

2b pupation outside the mine; frass in strings => 3

3a pinnately branched corridor, main branch overlying the midrib; larva: rear spiraculum with 9-13 papillae: Liriomyza strigata

3b corridor not pinnate, windding freely through the leaf; larva: rear spiraculum with 7-9 papillae: Liriomyza bryoniae

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

104 – Diptera

104a Cecidomyiidae: Jaapiella bryoniae, parvula

104b Tephritidae: Gonioglossum wiedemanni

107 – rust fungi

107a Pucciniaceae: Puccinia isiacae

109 – powdery and downy mildews

109a Erysiphaceae: Golovinomyces cucurbitacearum, orontii

109b Peronosporaceae: Pseudoperonospora cubensis

Not included in the key: Liriomyza trifolii.

01/08/2016