Inula elecampane, irish fleabane, ploughman’s spikenard, golden samphire
Incl. Dittrichia graveolens & viscosa; Limbarda crithmoides
(For a dichotomous table for galls on Inula by Hans Roskam click here)
Dichotomous table for leafminers
1a full depth corridor or blotch => 2
1b upper- or lower-surface corridor or blotch => 11
1c fleck mine => 16
1d galls, etc => Tables for all parasites per species
Dichotomous table for leafminers
1a full depth corridor or blotch => 2
1b upper- or lower-surface corridor or blotch => 11
1c fleck mine => 16
1d galls, etc => Tables for all parasites per species
2a blotch, with a central black concentration of frass: Pseudorchestes persimilis
2b no such central frass spot => 3
3a larva without feet: Orthochaetes insignis
3b larva with thoracic feet => 4
4a mine contains an appreciable amount of frass => 5
4b mine with little or no frass => 6
5a older larva (greenish) lives free under a spinning: Tebenna micalis
5b larva (pale pink) mines all its life: Atralata albofascialis
6a larva uniformly greenish, without pinacula => 7
6b larva grey with recognisable pinacula => 10
7a pupation within the mine (in an isolated small blotch without frass) => 8
7b pupation outside the mine (in a fusiform reticulate cocoon, often at the leaf underside against the midrib) => 9
8a final part of the mine corridor-like: Digitivalva valeriella
8b final part rounded, blotch-like: Digitivalva perlepidella
9a species from Spain and southern France: Digitivalva solidaginis
9b species from the Mediterranean from southern France till Dalmatia: Digitivalva occidentella
9c species from southern Europe till southern Russia: Digitivalva orientella
9d species from Macedonia: Digitivalva heringi
9e species from central and southern Europe, Belgium included: Digitivalva granitella
10a larva: pinacula colourless (the bases of the setae themselves are black) : Cnephasia incertana
10b pinacula black: Cnephasia asseclana
10c the larva of Cnephasia ecullyana is not known
11a at the start of the mine a lower-surface elliptic egg shell: Phorbia incana
11b no egg shell visible => 12
12a blotch, preceded by a long corridor: Phytomyza kyffhusana
12b corridor, sometimes a secondary blotch => 13
13a pinnately branched corridor, on top of the midrib and larger side veins: Liriomyza strigata
13b mine not pinnate, not associated with leaf venation => 14
14a frass in discrete grains; larva: rear spiraculum with 6-9 papillae: Chromatomyia cf. syngenesiae
14b frass partly in pearl chains => 15
15a no secondary blotch; puparium sometimes in the mine; larva: rear spiraculum with 15-20 papillae: Phytomyza conyzae
15b mostly a secondary blotch; pupation always outside the mine; rear spiraculum with 7-12 papillae: Liriomyza bryoniae
16a hole in the mine not neatly round; case helicoidal: Apterona helicoidella
16b hole precisely circular; case in principle tubular => 17
17a case laterally compressed, bivalved => 18
17b case a tubular silken case, trivalved => 21
18a On Inula spp. => 19
18b On Dittrichia spp. => 20
19a case brown, hairy (spathulate leaf case); mouth angle about 45°; lowland species: Coleophora conyzae
19b case blackish, smooth; mouth angle less than 45°, causing the case to lie flat on the leaf; mountain species: Coleophora leucogrammella
20a case c. 7 mm: Coleophora jerusalemella
20b case c. 12 mm: Coleophora solidaginella
21a case 9-10 mm => 22
21b case c. 15 mm: Coleophora inulae
22a mouth angle c. 30°: Coleophora follicularis
22b mouth angle 45-60°: Coleophora trochilella
Not included in the key: Digitivalva eglanteriella, pappella; Pseudorchestes ? cinereus, persimilis gallicus.