Stigmella assimilella - On Aspen - 13th Nov 2025 - Hayfield, Birch Vale, Sett valley - Christian Heintzen - on Aspen (Populus tremula) (A) > contorted gallery with tendency to form a secondary blotch due to tight turns (B.1, C) > frass line broken and linear (B.1, C) > oviposition on upper surface, close to vein or midrib (B.2, D)
Stigmella assimilella - On Aspen - 13th Nov 2025 - Hayfield, Birch Vale, Sett valley - Christian Heintzen - on Aspen (Populus tremula)
Stigmella assimilella – Aspen Pigmy - On Poplar - Wyver Lane, Belper - Dave Evans
Stigmella assimilella – Aspen Pigmy - Dave Evans