1a larva mines from a case, makes fleck mines => 2

1b larva does not mines from a case => 8

1c galls, etc => Tables for all parasites per species

2a larva in a composite leaf case => 3

2b larva in a black tubular case: Coleophora vibicella

2c larva in a lobe case => 4

3a case short and thick-set, c. 7 mm long, made out of only a few leaf fragments: Coleophora hartigi

3b case long and slender, 7-11 mm, out of 6-7 leaf fragments: Coleophora sardocorsa

4a mouth opening shifted laterally, case lies sidewards on the leaf (occurrence on this plant not certain): Coleophora onobrychiella

4b mnouth opening normal => 5

5a mouth angle 80-90°; case perpendicular to the leaf: Coleophora saturatella

5b mouth angle 20-45°; case makes a distinct angle with the leaf => 6

6a lobes are placed alternatively, creating the impression of a yellowed grass spikelet: Coleophora genistae

6b lobes untidily arranged => 7

7a rear end of the case not covered by lobes, strongly curved downwards: Coleophora colutella

7b also rear end covered by lobes, not so remarkably curved down: Coleophora trifariella

8a tentiform mines => 9

8b mines flat => 17

9a Macaronesian species (Canary Islands, Madeira) => 10

9b species of continental Europe => 13

10a Madeira: Phyllonorycter juncei madeirae

10b Canary archipelago => 11

11a mine upper surface: Phyllonorycter bartolomella

11b mime lower surface => 12

12a mine with transversal folds, tip of the leaf strongly curved downward: Phyllonorycter juncei

12b mine with longitudinal folds, causing the leaf to fold lengthwise: Phyllonorycter foliolosi

13a on Genista sagittalis: Phyllonorycter cerasinella

13b on other species => 14

14a mine lower surface => 15

14b mine upper surface => 16

14c mine not described; possibly not a leaf miner, rather a rind miner on Genista etnensis; Sicilië: Phyllonorycter etnensis

15a on Genista monspessulana; Iberian Peninsula: Phyllonorycter telinella

15b on Genista germanica, tinctoria; also in more northern parts of Europe: Phyllonorycter fraxinella

16a on Genista florida; Iberian Peninsula: Phyllonorycter genistella

16b on Genista sericea; Mediterranean: Phyllonorycter triflorella

16c on Genista procumbens, scoparius, southern Europe: Phyllonorycter staintoniella

17a mine practically without frass => 18

17b mine contains obvious amounts of frass => 24

18a the larve lives in the mine till just before pupation; no silk on the plant in the vicinity of the mine: Micrurapteryx kollariella

18b the larvae live shorter or longer outside the mine, producing external silk => 19

19a the young larvae live in (small) mines; later they live free among spun leaves => 20

19b the larve live between leaves spun together, make holes in their epidermis and cause fleck mines (perhaps only facultative miners): Mirificarma cytisella; Syncopacma albipalpella, Syncopacma suecicella

20a larvae darkly coloured, greenish to greyish-black => 21

20b larvae light in colour => 23

21a larva: pinacula colourless (the bases of the setae themselves are black) : Cnephasia incertana

21b pinacula black => 22

22a larva: behind/below the anus a chitinous comb: Cnephasia asseclana

22b anal comb absent: Cnephasia stephensiana

23a larva with six reddish length lines: Syncopacma cincticulella

23b no length lines: Syncopacma vinella

40a full depth blotch with frass in a central spot; larva with chitinised head => 25

24b mine upper-surface, initially a corridor along the leaf margin; larva a maggot => 27

25a frass in dark central spot; here in the end a cocoon is formed and pupation takes place: Oryxolaemus flavifemoratus

25b frass in spiral arcs; pupation external => 26

26a pupa: rear half of abd 8 dorsally with a coarse, “rasp-like” sculpture: Leucoptera laburnella

26b on this place fine ridges, running diagonally: Leucoptera genistae

27a larva: anterior tooth of mandible curved backwards: Agromyza pulla

27b anterior tooth at right angle (rare on this host plant): Agromyza johannae