Sesleria, blue moor-grass

fam. Poaceae

1a mine full depth; larva with feet and chitinised head; pupation outside the mine => 2

1b mine upper-surface; larva a maggot; puparium in the mine: Chromatomyia nigra

1c gallen etc => 100

2a larva yellow-white, dorsally two orange-red length lines Elachista cinereopunctella

2b larva greenish, without length lines => 3

3a larva dull grey green, solitary: Elachista megerlella

3b larva olive green, often 2-3 per mine: Elachista adscitella

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: Abacarus hystrix; Aceria cornuta, tenuis

107 – rust fungi

107a Pucciniaceae: Puccinia coronata, graminis, sesleriae

108 – smut fungi

108a Tilletiaceae: Tilletia sesleriae

108b Urocystidaceae: Urocystis mayori

108c Ustilaginaceae: Ustilago striiformis

109 – powdery and downy mildews

109a Erysiphaceae: Blumeria graminis

110 – other causers

110a Fungi, Clavicipitaceae: Claviceps purpurea

110b Fungi, Phyllachorales: Phyllachora graminis

Not included in the key: Cerodontha elbergi; Chromatomyia opacella; Elachista dimicatella, heinemanni.

26/05/2017