Erodium, heron’s bill

fam. Geraniaceae

1a fleck mine: small, full depth blotch without frass, with a relatively opening by which the larvae has accessed the leaf tissue => 2

1b no fleck mine, but a corridor or blotch with clear amounts of frass => 4

1c galls, etc => 100

2a larva mines from a helicoidal case => 3

2b larva does not mine from a case: Aricia agestis

3a suture between the windings of the case very shallow: Apterona gracilis

3b suture normal, deep: Apterona helicoidella

4a the oviposition spot, where the mine begins, covered by a drop of dried secretion: Habroloma triangulare

4b no such drop => 5

5a mine small; larva with legs and chitinised head; the older larva lives free among spun leaves: Cnephasia incertana

5b mine not remarkably small; the larva, a maggot, mines all its life => 6

6a species of the Canary Islands: Agromyza erodii

6b species of continental Europe: Agromyza nigrescens

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 Meloidogynidae: Meloidogyne hapla

102 – Acari

102a Eriophyidae: Aceria erodii, schlechtendali

103 – Coleoptera

103a Curculionidae: Limobius borealis

104 – Diptera

104a Cecidomyiidae: Dasineura erodiicola, geranii

109 – powdery and downy mildews

109a Erysiphaceae: Erysiphe geraniacearum; (Neoërysiphe geranii); Podosphaera erodii

109b Peronosporaceae: Peronospora erodii; Plasmopara wilsonii

110 – other causers

110a Fungi, Synchytriaceae: Synchytrium papillatum

21/04/2016

pub 3.xii.2016 · mod 18.vii.2017