Treble-bar - Aplocera plagiata

Wingspan 27-40 mm. On of our larger Geometrids, it is rather difficult to tell apart from the less common Lesser Treble-bar (A. efformata), which however has a more angled inner cross-line on the forewing. Abdomen shape should be checked - see the image at: http://www.northumberlandmoths.org.uk/files/idtips/1867-treble-bar-1868-lesser-treble-bar-abdomens.jpg

Calcareous grassland, heathland, moorland, woodland rides, sand-dunes and sea cliffs.

In the south, there are two generations of this moth, flying in May and June, then again in August and September. In the north of England and Scotland, there is usually just one brood, flying in July and August.

The larvae feed on St.John's-wort.

It is fairly common over most of Britain. In a recent survey to determine the status of all macro moths in Britain this species was classified as common.

Fairly common in Leicestershire and Rutland. L&R Moth Group status = A (common and resident)