Dark Marbled Carpet Geometridae

Dysstroma citrata (Linnaeus, 1761)

Description: Wingspan 32-40mm. An extremely variable species with many different colour forms. The most common variety has dark grey forewings with pale brown bands located at the basal and terminal areas of the forewings. There is also a pale whitish blotch on the costa towards the apex of each forewing. Variations are common with some specimens being whitish grey with the bands greatly reduced.

Similar Species: The Dark Marbled Carpet - When viewed from the underside, the postmedian line on the hindwings is more acutely angled than the closely related Common Marbled Carpet C. truncata.

Key Identification Features:

Sets:  male upperside

Flight Period: From the beginning of July to early October.

Status: Widespread and commonly encountered in southern counties but scarcer north of Lough Neagh.

Ecology: Recorded from a wide range of habitats including woodland margins, clearings, bogs and heaths. Adults come to light frequently and in moderate numbers. They are occasionally disturbed by day from tree trunks and stone walls on which they often rest. The larvae feed on birch Betula spp., willow Salix spp. and Bilberry Vaccinium myrtillus. It overwinters as an egg.

World Distribution: North America, throughout Europe and Asia east to China.

Bradley & Fletcher number: 1762 Agassiz number: 70.098

Additional information:

UK Moths account

Caterpillar: 

 Thompson, R. S. & Nelson, B., 2003 (Oct 2). [In] The Butterflies and Moths of Northern Ireland
http://www.ulstermuseum.org.uk/lepidoptera/species.asp?item=5842

[Home]