With a forewing length of 7 to 9mm (0.3 to 0.4in), this small moth can be quite variable, but can usually be identified by its white cross-lines and markings.
The adults fly from June to September, and are attracted to light. They are fairly common throughout Britain, and can be seen in woodland, grassland and gardens. The larvae feed on mosses.
Small Grey (Eudonia mercurella) © Pete Hillman July 2017.