This is a medium-sized pale grey moth with distinctive long black markings. It is a recent colonist, being first recorded in Britain in 1951 on the Isle of Wight and since then it has quickly spread north, as far as southern Scotland. It is common in areas where Cypress trees are present and benefits from the planting of Cypress trees in parks and gardens.
It overwinters as an egg, laid on Cypress leaves. The larvae occur from March to July and then they pupate underground.