Ingrailed Clay Noctuidae

Diarsia mendica (Fabricius, 1775)

Description: Wingspan 28-36 mm. Adults can be extremely variable in colour. Forewings range from pale straw to a light brown or chestnut colour. Stigmata not always clearly defined. There are two dark marks between the anterior and posterior crosslines; these marks are not always distinct on some individuals. Hindwings pale yellowish grey, with a small discal spot.

Key Identification Features:

Sets:  male upperside

Flight Period: Late May to the end of August.

Status: A common and widespread species found throughout all counties and on Rathlin Island.

Ecology: This is generally distributed in most habitats. Adults appear regularly at light and also visit flowers and honeydew. The larvae feed from September until April of the following year on Bramble Rubus fruticosus, Bilberry Vaccinium myrtillus, willow Salix spp., Hawthorn Crataegus monogyna and Heather Calluna vulgaris. It overwinters as a larva.

World Distribution: Holarctic; in western Europe confined to higher altitudes in southern regions.

Bradley & Fletcher number: 2120 Agassiz number: 73.333

Additional information:

UK Moths account


 Thompson, R. S. & Nelson, B., 2003 (Oct 2). [In] The Butterflies and Moths of Northern Ireland