Argyresthia retinella Zeller, 1839

netted argent

on Betula

parasite

Eggs are deposited on/under lichens on the branches. Freshly hatched, bright yellow larve bore into a bud (if the do not perish in the sticky resin the covers the buds). Older larvae also bore in the pith of the shoot and in petioles. A larva destroys several buds or shoots. Pupation in a light cocoon in the leaf litter on the ground.

host plants

Betulaceae, monophagous

Betula pubescens.

References to Quercus, Salix caprea need further confirmation.

phenology

Univoltine; hibernation the arctic North in the egg stage, more to the south as larva (Elverum ao).

distribution within Europe

(PESI, 2019).

larva

Full grown, 6 mm long larvae almost white with a light brown head.

pupa

See Patočka (1998a), Patočka & Turcáni (2005a).

references

Agassiz (1996a), Bengtsson & Johansson (2011a), Elverum, Johansen & Nilssen (2003a), Friese (1969a), Huemer (2012a), Konečná (2013a), Leutsch (2011a), Patočka (1998a), Patočka & Turcáni (2005a), Tenow, Nilssen, Holmgren & Elverum (1999a).

mod 20.iii.2019