Briza, quaking grass

fam. Poaceae

1a fleck mine => 2

1b corridor or blotch => 3

1c galls, etc => 100

2a case straw-coloured, with a constriction behind the mouth: Coleophora lixella

2b case brownish, without a constriction: Coleophora ornatipennella

3a larva wth recognisable head a thoracic feet: Elachista sicula

3b larva a maggot => 4

4a larva: mandible with 1 tooth; at the begin oif the mine (often within a leaf sheath) at the outside an egg shell: Hydrellia griseola

4b mandible with 2 or more teeth; no egg shell visible => 5

5a larva: cephalic skeleton of Agromyzinae-type; pupation outside the mine: Agromyza nigrella / A. mobilis *

5b cephalic skeleton of Phytomyzinae-type => 6

6a larva yellow; pupation outside the mine: Liriomyza flaveola

6b larva whitish; puparium within the mine => 7

7a puparium whitish: Chromatomyia nigra

7b puparium metallic black: Cerodontha incisa

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: Aceria tenuis

104 – Diptera

104a Cecidomyiidae: Contarinia brizae

107 – rust fungi

107a Pucciniaceae: Puccinia coronata, graminis, striiformis; Uromyces brizae

108 – smut fungi

108a Georgefischeriaceae: Jamesdicksonia brizae

108b Urocystidaceae: Urocystis helvetica

108c Ustilaginaceae: Ustilago striiformis

109 – powdery and downy mildews

109a Erysiphaceae: Blumeria graminis

110 – other causers

110a Fungi, Ceratobasidiaceae: Ceratorhiza rhizodes

* See also the key to the grass-inhabiting Agromyza larvae.

20/10/2015