Editing Small fan-footed wave

{{short description|Species of moth}}
{{Speciesbox
| name = Small fan-footed wave
| image = Idaea biselata-01 (xndr).jpg
| taxon = Idaea biselata
| authority = ([[Johann Siegfried Hufnagel|Hufnagel]], 1767)
}}

The '''small fan-footed wave''' ('''''Idaea biselata''''') is a [[moth]] of the family [[Geometridae]]. The species was [[Species description|first described]] by [[Johann Siegfried Hufnagel]] in 1767.

==Distribution==
The species is widespread from the [[British Isles]] across western Europe  and east to the [[Urals]]. In northern Europe, the range extends about to central [[Fennoscandia]]. In the south the range extends up to central [[Portugal]], [[Corsica]], the northern [[Apennines]] and northern [[Greece]]. Isolated occurrences are known from [[Calabria]] and the [[Peloponnese]]. Outside of Europe it is found in the [[Caucasus]], [[Transcaucasia]], in the north of [[Turkey]], in [[Siberia]], in northern [[Kazakhstan]], as well as in the [[Russian Far East]]. The subspecies ''Idaea biselata extincta'' <small>(Staudinger, 1897)</small> is represented in [[Korea]] and the [[Ussuri]] region. It rises to about 1,700 metres above sea level in the Alps. South of the Alps, is found from 600 to 1,500 metres and is rarely found below this range.
[[File:Idaea biselata, Small Fan-footed Wave, Dovey Forest, North Wales, August 2015 (20921559340).jpg|thumb|230px|left|Small Fan-footed Wave, [[River Dyfi|Dovey Forest]], North Wales]]

==Description==
It is a small ([[wingspan]] 22–25&nbsp;mm), easily missed species. The wings are creamy white with darker bands with a small black discal spot on each wing. The basic colouring and pattern vary relatively little. The ground colour is yellowish white to slightly brownish white, the pattern elements are brown to dark brown. On the forewings the interior crossline is the most clearly shown. However, the outer crossline is usually significantly developed. A pale wavy line that is lined with inner and outer darker colour is located in the marginal field. Forewings and hindwings have black discal spots. On the front wings, these are basal to the middle crossline, on the rear wings they are distal to the interior crossline. Marginal stains are dark brown in colour, but dimly developed. The larva is long and thin, with a few short setae, brownish grey with a white side stripe.<ref>Hausmann, A, 2021  In: Axel Hausmann (Hrsg.):  ''The Geometrid Moths of Europe''. 1. Auflage. Volume 2: Sterrhinae Brill {{ISBN|978-90-04-32255-4}}</ref><ref>Patrice Leraut: Geometrid moths. In: ''Moths of Europe''. 1. Auflage. Band 2. NAP Editions, 2009, {{ISBN|978-2-913688-09-4}} in English</ref><ref name="gb">[[Wikisource:The Moths of the British Isles Second Series/Chapter 8#230]]</ref>

[[Image:Buckler W The larvæ of the British butterflies and moths PlateCXVII.jpg|thumb|150px|left|3,3a Larvae after final moult 3b,3c enlarged view of segments]]

==Biology==
It sometimes flies short distances by day but mainly at night when it is attracted to light. The adults are on the wing from June to August.{{ref|flight season}}

The [[larva]] feeds on a variety of [[plant]]s including [[asparagus (genus)|asparagus]], [[dandelion]], [[Polygonum|knotgrass]], [[oak]], [[Plantago|plantain]] and ''[[Rubus]]''. The species overwinters as a larva.

#{{Note|flight season}}''The flight season refers to the [[British Isles]]. This may vary in other parts of the range.''

==References==
{{Reflist}}
* [[Michael Chinery|Chinery, Michael]] (1986, reprinted 1991). ''Collins Guide to the Insects of Britain and Western Europe''.
* [[Bernard Skinner (entomologist)|Skinner, Bernard]] (1984). ''[[The Colour Identification Guide to Moths of the British Isles]]''.

==External links==
{{Commons category|Idaea biselata}}
* {{cite web |last=Kimber |first=Ian |url=https://www.ukmoths.org.uk/species/idaea-biselata |title=70.013 BF1702 Small Fan-footed Wave ''Idaea biselata'' (Hufnagel, 1767) |website=UKMoths |accessdate=5 July 2019}}
* [http://www.lepiforum.de/lepiwiki.pl?Idaea_Biselata ''Lepiforum e.V.'']

{{Taxonbar |from=Q171359}}

[[Category:Sterrhini]]
[[Category:Moths described in 1767]]
[[Category:Moths of Asia]]
[[Category:Moths of Europe]]
[[Category:Taxa named by Johann Siegfried Hufnagel]]