Teleiopsis diffinis (Haworth, 1828)

large groundling

on Rumex

mijn

The young larva makes a slender sinuous gallery with only here and there some frass. Sometimes the mine is widened near the leaf margin into a blotch. The larva may make several mines. Older larvae live free at the underside of a near-ground leaf in with silk a more or less tubular contracted margin, often causing window feeding.
Bland ao do not write about a mine; perhaps it is not made in all cases.

host plants

Polygonaceae, monophagous

Rumex acetosa, acetosella, crispus, “tingitanus”.

References to Rumex tingitanus may apply to the West Mediterranean Rumex roseus or the Macaronesian endemic R. maderensis.

phenology

Two generations; larvae from August till May and from July till August.

distribution within Europe

(PESI, 2019).

larva

Mining larva very active,yellowish brown (body, prothorax, head). Pictures of both mining and free living larva and pupa in Heckford & Beavan.

references

Baldizzone & Scalercio (2018a), Bland, Corley, Emmet ao (2002a), Heckford & Beavan (2019a), Huertas Dionisio (2007a), Ka)itila (1996a), Microlepidoptera.nl (2019), De Prins & Steeman (2013a).

mod 9.ix.2019