Lens, lentil

Incl. Ervum.

1a mine small, irregular, full depth; larva, with chitinised head, later lives free among spun leaves: Cnephasia incertana

1b upper- or lower-surface corridor or blotch; larva, a maggot, mines all its life => 2

1c galls, etc => 100

2a elongate blotch on top of the midrib, with side branches: Liriomyza xanthocera

2b corridor => 3

3a pupation within the mine, in a, usually loower-surface, pupal chamber; frass in well-spaced grains: Chromatomyia horticola

3b pupation outside the mine; frass otherwise => 4

4a frass in broad green central band: Liriomyza congesta

4b frass in irregular strings at either side of the corridor: Lriomyza bryoniae

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 Heteroderidae: Heterodera goettingiana, schachtii, trifolii

102 – Acari

102a Eriophyidae: Aceria trifolii

104 – Diptera

104a Cecidomyiidae: Contarinia lentis

107 – rust fungi

107a Pucciniaceae: Uromyces ervi, verrucosae-craccae, viciae-craccae, viciae-fabae

109 – powdery and downy mildews

109a Erysiphaceae: Erysiphe pisi var. pisi, trifoliorum

109b Peronosporaceae: Peronospora lentis