Vicia, Vetch *

fam. Fabaceae

1a tentiform mine => 2

1b blotch, or something between blotch and corridor => 3

1c slender corridor from start to end => 12

1d galls, etc => 100

2a mine strongly inflated, almost the entire leaflet folding over it; upper surface mottled white; pupa: cremaster with two pairs of thorns that are set close together; especially the outer pair stout: Phyllonoryter nigrescentella

2b mine weakly inflated, its upper surface largely green; cremaster with two pairs of thread-thin spines, not set close together: Phyllonoryter insignitella

3a ‘corridor-blotch’; larva with chitinised head; larvae later live free between spun leaves => 4

3b clear blotch, may have a narrow initial corridor; larva a maggot, remaining in the mine till pupation => 7

4a larva dark, limits between the thoracic segments whitish: Aproaerema anthyllidella

4b larva entirely dark => 5

5a larva: pinacula colourless (only the base of the setae black): Cnephasia incertana

5b pinacula black => 6

6a larva: segment 10 with an anal comb: Cnephasia asseclana

6b segment 10 without an anal comb: Cnephasia stephensiana

7a blotch without a trace of a preceding corridor: Agromyza viciae

7b blotch with an initial corridor => 8

8a initial corridors follows the leaf margin => 9

8b initial corridor independent of the leaf margin => 10

9a blotch full depth; frass in a few black lumps: Agromyza vicifoliae

9b blotch with a few full depth patches only; frass in small grains: Agromyza bicophaga

10a frass in coarse lumps; larva: cephalic skeleton of Agromyzinae-type => 11

10b frass in granules or strings; cephalic skeleton of Phytomyzinae-type: Liriomyza xanthocera

11a larva: rear spiraculum with 3 papillae: Agromyza nana

11b rear spiraculum with about 40 papillae: Agromya lathyri

12a puparium in the mine, in a, usually lower-surface, pupal chamber: Chromatomyia horticola

12b before pupation the mine is vacated through a semicircular exit slit => 13

13a frass in black strings: Liriomyza strigata

13b frass in a broad, green central band: Liriomyza congesta

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 Heteroderidae: Heterodera goettingiana, trifolii

101c Meloidogynidae: Meloidogyne hapla

102 – Acari

102a Eriophyidae: Acera ? euaspis, trifolii; Aculus retiolatus

105 – Hemiptera

105a Aphididae: Acyrthosiphon pisum; Aphis craccae, fabae fabae; Megoura viciae

105b Asterolecaniidae: Planchonia arabidis

109 – powdery and downy mildews

109a Erysiphaceae: Erysiphe baeumleri, pisi var. pisi, trifoliorum; Leveillula papilionacearum

109b Peronosporaceae: Peronospora ervi, fabae, mayorii, narbonensis, sepium, viciae

110 – other causers

110a Fungi, Helotiales: Botrytis fabae

110b Fungi, Mycosphaerellaceae: Ovularia sphaeroidea, viciae

110c Fungi, Synchytriaceae: Synchytrium aureum

* See Buhr (1953a) for the miners of Vicia faba.

Not included in the key: Coleophora colutella, craccella, ononidella, vibicella; Cosmopterix schmidiella; Liriomyza bryoniae, huidobrensis, pisivora, trifolii; Micrurapteryx gradatella; Phyllonorycter medicaginella; Phytoliriomyza variegata; Scaptomyza graminum.