Daphne, mezereon

1a mine small, verry irregular in shape; the larva makes several mines; the first begins at an egg shell, the next ones at a small round hole (rarely on this hostplant): Prays fraxinella

1b mine neither small nor strikingly irregular; mine does not begin at a visible egg or a hole => 2

1c galls, etc => 100

2a larva a maggot; vacated mines have an exit slit in the upper epidermis: Liriomyza approximata

2b larva with head and feet; vacated mines have a slit in the leaf margin => 3

3a on Daphne alpina, cneorum, striata: Phyllobrostis hartmanni

3b on Daphne gnidium => 5

4a final mine a corridor; frass black: Phyllobrostis daphneella

4b final mine a large blotch; frass brown: Phyllobrostis fregenella

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: Aculus blagayanae, daphnes; Mesalox daphnei

104 – Diptera

104a Cecidomyiidae: Dasineura daphnephila, daphnes

105 – Hemiptera

105a Aphididae: Macrosiphum daphnidis

109 – powdery and downy mildews

109a Erysiphaceae: ? Erysiphe alphitoides

110 – other causers

110a Bacteria, Actinomycetales: Rhodococcus fascians

110bBacteria, Rhizobiales: Agrobacterium tumefaciens

110c Lepidoptera, Lyonetiidae: Phyllobrostis eremitella