Molinia, purple moor-grass

fam. Poaceae

1a larva with chitinised head; in narrow segments of the corridor frass in a more or less narrow central line; pupation outside the mine: Elachista subalbidella

1b larva a maggot; in narrow parts the frass in two lines; puparium in the mine => 2

1c galls, etc => 100

2a puparium orange brown; front spiracula penetrate the epidermis: Chromatomyia nigra

2b puparium metallic black; spiracula not penetrating => 3

3a larva: the black warts at the outside of the rear spiracula small, without a root’: Cerodontha incisa

3b these warts large, with a deep ‘root’: Cerodontha pygmaea

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: Aceria tenuis

104 – Diptera

104a Cecidomyiidae: Antichiridium striatum; Lasioptera moliniae; Mayetiola moliniae, ventricola

104b Chloropidae:

107 – rust fungi

107a Pucciniaceae: Puccinia brunellarum-moliniae, coronata, graminis, nemoralis

108 – smut fungi

108a Tilletiaceae: Neovossia moliniae

109 – powdery and downy mildews

109a Erysiphaceae: Blumeria graminis

110 – other causers

110a Fungi, Clavicipitaceae: Claviceps purpurea

110b Fungi, Plasmodiophoraceae: Sorosphaera radicalis

Not included in the key: Cerodontha melicae

21/12/2016