Plant Parasites of Europe

leafminers, galls and fungi

Cucumis

Cucumis cucumber

(For a dichotomous table for galls on Cucumis by Hans Roskam click here)

Dichotomous table for leafminers

1a larva bores in the basis of the stem, making from there short excursions into the lower leaves: Delia platura

1b larva lives in the leaves only; mine a corridor => 2

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

2a frass in isolated grains, lying more than their diameter apart; puparium in the mine, in a, usually lower-surface, pupal chamber: Chromatomyia horticola

2b frass mostly in strings or pearl chains; puparium formed outside the mine => 3

3a corridor pinnately branched, main branch overlying the midrib, side branches overlying the lateral veins; larva: rear spiraculum with 9-13 papillae: Liriomyza strigata

3b corridor not pinnately branched, winding freely through the leaf; rear spiraculum with 7-9 papillae: Liriomyza bryoniae

Not included in the key: Liriomyza huidobrensis, Liriomyza trifolii.

Tables for all parasites per species

Last modified 25.iv.2020