Taken at Shilton, Oxon., on July 13th 2025. (© David Hastings)
(1/200th sec at f/11)

Description

Family: Geometridae (ABH : 70.094)

Wing span: 26 - 34mm

There are two forms of this moth, one with the dark central band complete, and the other where it is divided. The outer edge of the central band curves outwards in the leading half. Both forms have a distinctive series of dark wedge-shaped marks beyond the central band. The male rests with the tip of the abdomen curled up.

It can be found throughout the British Isles.

It is most numerous in woodland rides and glades, but can be found wherever the food-plants occur.

There are two generations (except in northern Scotland) from late April to June, and late July to early September. The pupa is the over-wintering stage.

Larvae feed on various species of willowherb.

It is readily disturbed from the larval food-plant by day, flies from dusk and comes to light and sugar.

Earliest UK sighting: 13th July

Sightings