Phyllocnistis extrematrix Martynova, 1955
on Populus

Populus nigra, Hungary, Mosonmagyaróvár, 23.vii.2018 © László Érsek

final part of the gallery, entering a leaf

old, worn gallery

Populus x canadensis, Belgium prov. West Flanders, Boezinge, Fort Saint Nicolas, 27.ix.2019 © Maarten Willems

gallery over the petiole

pupation site
mine
long gallery in the bark of young shoots; only towards the end the gallery, via the petiole, enters the leaf, and pupation takes place under a folded leaf margin.
host plants
Salicaceae, monophagous
Populus balsamifera, x canadensis, nigra, trichocarpa.
phenology
Probably several generations; hibernation as imago.
BENELUX
Found in the Netherlands in 2018 (Prick & van Nieukerken).
distribution within Europe
France, Iberia, Czechia, Slovakia, Romania, Kazakhstan (Laštůvka & Laštůvka).
references
Buchner (2019a), Haslberger, Segerer, Grünewald & Lichtmannecker (2017a), Martynova (1955a), Laštůvka & Laštůvka (2014a), Liška, Šumpich, Laštůvka, ao (2014a), Liška, Vávra, Laštůvka, ao (2018a), Prick & van Nieukerken (2018a), Schulz & Fähnrich (2018a), Steeman & Sierens (2019a), Stark (2022a).