Epilobium *, willow-herb

fam. Onagraceae

1a larva in June-August => 2

1b larva in March-May => 3

1c galls, etc => 100

2a on lesser Epilobium-species; one or more short corridors radiating from the base of the midrib; later mine (may be on another leaf) an elongated blotch beginning at the midrib: Mompha locupletella

2b on Epilobium hirsutum; untidy corridor somewhere on the leaf; later mine a large blotch independent of the midrib: Mompha langiella

3a on lesser Epilobium-species; one or more short corridors radiating from the base of the midrib; later mine an elongated blotch that begins at the midrib: Mompha locupletella

3b on all Epilobium-species; blotch mines only => 4

4a lower-surface blotch, centered over the midrib; little or no frass: Mompha ochraceella

4b full-depth blotch without apparent association with the midrib; much coarse granular frass => 5

5a larva: anal shield light brown, feet dark brown: Mompha propinquella

5b anal shield and feet dark grey: Mompha lacteella

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

102 – Acari

102a Eriophyidae: Phyllocoptes epilobiorum

103 – Coleoptera

103a Curculionidae: Auleutes epilobii

104 – Diptera

104a Cecidomyiidae: Dasineura epilobii

105 – Hemiptera

105a Aphididae: Aphis epilobiaria, epilobii, grossulariae, pollinaria, praeterita, salicariae

105a Asterolecaniidae: Planchonia arabidis

108 – smut fungi

108a Doassansiaceae: Doassansia epilobii

109 – powdery and downy mildews

109a Erysiphaceae: Erysiphe howeana; Leveillula taurica; Podosphaera epilobii

109b Peronosporaceae: Plasmopara epilobii

110 – other causers

110a Fungi, Synchytriaceae: Synchytrium aureum

110b Fungi, Venturiaceae: Venturia maculiformis

110c Lepidoptera, Momphidae: Mompha bradleyi, divisella, subbistrigella

* See also the key for Chamerion.

Not included in the key: Cnephasia incertana, Cnephasia stephensiana; Liriomyza strigata; Mompha epilobiella.

03/12/2016