Plant Parasites of Europe

leafminers, galls and fungi

Hyoscyamus

Hyoscyamus henbane

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

Dichotomous table for leafminers

1a one or more short galleries radiating from the base of the leaf or the midrib: Psylliodes hyoscyami

1b mine otherwise => 2

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

2b gallery => 3

2a large blotch => 5

3a frass in well-separated grains; puparium min the mine, in a, usually lower-surface, pupal chamber: Chromatomyia horticola

3b frass in strings; pupation outside the mine => 4

4a corridor pinnately branched; main branch overlying the midrib Liriomyza strigata

4b corridor not pinnate, freely winding through the leaf: Liriomyza bryoniae

5a at the start of the mine a lower-surface group of elliptic egg shels; larva a maggot: Pegomya hyoscyami

5b no egg shells; larvae with well-visible feet and head => 6

6a the blotch contains appreciable quantities of frass: Phthorimaea operculella

6b blotch (almost) without frass => 7

7a silk is deposited within the mine causing it to contract or pucker: Cnephasia lineata

7b mine flat => 8

8a larval green: Microlechia chretieni

8b larval brown (?): Scrobipalpa ergasima

Tables for all parasites per species

Last modified 6.vii.2020