Phyllocnistis extrematrix

Phyllocnistis extrematrix is a moth in the family Gracillariidae. It is found widely in central and southern Europe, and in Kazakhstan and the Asian part of Russia; it has also recently colonised England, where it was first discovered in Norfolk on 29 July 2025. The larvae feed on several species of poplar, including Populus balsamifera, Populus × canadensis, Populus nigra, Populus suaveolens and Populus trichocarpa, forming mines which start near the base of the leaf and then work down the leaf petiole and into young stems.

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Phyllocnistis es un género de polillas de la familia Gracillariidae. ​ Descripción Adulto Los adultos son pequeñas polillas con una envergadura que generalmente no excede los 5 mm. Las alas anteriores y las posteriores son lanceoladas y de color predominantemente blanco.