Subspecies and forms
- Alcis repandata muraria
- Alcis repandata repandata
- Alcis repandata sodorensium
- Alcis repandata f. conversaria
- Alcis repandata f. nigricata
Alcis repandata is a common species of Europe and the Near East, extending throughout Europe to the Urals, in the south over the Mediterranean, Asia Minor, the Caucasus to Kazakhstan and in the north to the Arctic Circle. 
The species inhabits deciduous, mixed and coniferous forests, bushy heaths, meadows, marshes and settlement areas. In the Alps occurs up to 1800 meters.
Alcis repandata has a wingspan reaching 30–45 mm. This is an extremely variable species, typically being buff or grey with black bars along the costa, but often with a broad blackish band across the forewings. Meyrick describes it - The head is grey mixed with whitish and fuscous. The forewings are light ochreous-brown, sprinkled with black and sometimes with whitish. The first line is curved, the median line is twice sinuate and dark fuscous, sometimes partly confluent. The second line is dark fuscous, roundly projecting above and below the middle. The subterminal is waved and pale or whitish, partially dark-margined. There is a blackish discal spot before the median. The hindwings are as the forewings, but the lines are less marked and regular. There is a discal dot beyond median. Melanic forms are also common, especially in industrial areas. In all but the darkest variations the most characteristic feature is a pale zigzag line across the hindwing. The larva is pale greenish-ochreous, brown-marked, sometimes suffused with dark grey, dusted with yellow. The dorsal line is brown or dark grey, distinct on segments 2–4, often obsolete elsewhere. Segments 5-12 sometimes have pale dorsal diamonds. See also Prout (1912–16)
This moth flies at night in June and July in the British Isles. It is attracted to light. 
The species overwinters as a small larva.
Recorded food plants
Host plants include:
Male Alcis repandata f. conversaria
- Fauna Europaea
- Mottled beauty at UKMoths
- Meyrick, E., 1895 A Handbook of British Lepidoptera MacMillan, London pdf This article incorporates text from this source, which is in the public domain. Keys and description
- Prout, L. B. (1912–16). Geometridae. In A. Seitz (ed.) The Macrolepidoptera of the World. The Palaearctic Geometridae, 4. 479 pp. Alfred Kernen, Stuttgart.pdf
- Martin C. Townsend, Jon Clifton and Brian Goodey (2010). British and Irish Moths: An Illustrated Guide to Selected Difficult Species. (covering the use of genitalia characters and other features) Butterfly Conservation.
- Chinery, Michael Collins Guide to the Insects of Britain and Western Europe 1986 (Reprinted 1991)
- Skinner, Bernard Colour Identification Guide to Moths of the British Isles 1984