Plant Parasites of Europe

leafminers, galls and fungi

Phytomyza rhodiolae

Phytomyza rhodiolae Griffiths, 1976

Diptera, Agromyzidae

mine

Long gallery that winds freely through the leaf, sometimes crossing itself and sometimes forming a secondary blotch (also because more than one mine may be present in a leaf). Frass in discrete grains. Mines mainly in the younger leaves. Pupation sometimes outside the mine, but often the puparium just protrudes from the exit slit (that may be either upper-surface or lower-surface); also some puparia are formed well within the mine.

hostplants

Crassulaceae, monophagous

Rhodiola rosea.

phenology

Larvae in June – July.

distribution within Europe

Scotland, Norway (Bland, 1995a).

larva

Mandibles with two teeth, alternating. Anterior spiracula bifid, with 12-15 papillae. Posterior spiracula each one a high conical base, deeply forked with two unusually long arns with, in total, 19-24 papillae.

puparium

Dark brown, shining, rear spiraculum forming a deep fork.

notes

In step with its hostplant a mountain species.

references

Bland (1995a), Griffiths (1976a).

22/07/2010

Last modified 28.vi.2017