Helianthemum rock-rose
Dichotomous table for leafminers
1a corridor, widening into, and often overrun by, a blotch => 2
1b blotch, not preceded by a gallery: Urodeta hibernella
1c tentiform mine: Triberta helianthemella
1d fleck mine, made by a larva that operated from the outside => 6
1e galls, etc => Tables for all parasites per species
2a at the start of the gallery a shining, semiglobular egg shell => 3
2b no egg shell visible at the start of the gallery => 6
3a gallery strongly wound, not slender: Parafomoria tingitella
3b gallery long and slender, not strongly wound => 4
4a gallery hardly widened at the end; frass occupies about one third of the width of the gallery: Parafomoria helianthemella
4b gallry abruptly and stronly widened at the end; frass line narrower: Stigmella diniensis
6a frass loose, individual grains well recognisable; larva with prolegs: Mompha miscella
6b frass compact, partly in clusters and threads, individual grains not easily discernable; larva without prolegs: Mantura matthewsi
7a mine associated with a silken tube, attached to the leaf => 8
7b mine not assosiciated with a tube of spinning => 9
8a larva greyish green with whitish length lines e grijsgroen met wittige lengtelijnen: Scythris picaepennis
8b larva dark purple with narrow whitish transverse lines: Scythris siccella
8c larva unknown, possibly not a miner: Scythris dissimilella
9a larva mines from a case, continues mining until pupation => 10
9b larve lives free => 18
10a case helicoidal => 11
10b case more or less straight => 12
11a suture line quite deep: Apterona helicoidella
11b suture line very shallow: Apterona gracilis
12a lobe case: Coleophora potentillae
12b composite leaf case => 13
12c (seemingly) a tubular leaf case => 17
13a leaf fragments the form the case very irregularly aligned, sticking out => 14
13b case with a more or less straight outline => 16
14a mouth angle 40°: Coleophora cyrniella
14b mouth angle 60-80°: Coleophora eupreta
15 not applicable
16a case slender, 10-15 mm: Coleophora ochrea
16b case squat, < 10 mm: Coleophora bilineella
17a case tubular; the openings in the mines are neatly round: Coleophora helianthemella
17b case oval; the openings in the mines are slits: Crinopteryx familiella
18a the larve mines all its life: Somabrachys aegrota
18b only the first instars are miners: 19
19a mines very small: Aricia agestis
19b mines relatively large: Adscita geryon