Xanthorhoe spadicearia
In 3 days ~10% in a week ~20%
Xanthorhoe spadicearia, the red twin-spot carpet, is a moth of the genus Xanthorhoe in the family Geometridae. The species was first described by Michael Denis and Ignaz Schiffermüller in 1775. It has a Palearctic range from Ireland through northern Europe then east to southern Siberia.It colonizes a variety of very different biotopes and occurs in both dry and humid and urban habitats. In the Alps, it rises to heights of 2100 metres.
The forewing is strongly marked with lines, much mixed with ferruginous ochreous in the distal area or at least in the vicinity of the geminate dark spots, the median band differently shaped, often of a brighter or lighter red (less purplish), never black, the hindwing darker distally than proximally the under surface strongly mixed with ochreous. It is very variable. - ab. confixaria H.-Sch. has the median band narrowed and the distal area somewhat weakly marked, rather uniformly ochreous. - livinaria Lah. is probably, as Staudinger indicates, a very extreme aberration with threadlike median band and broadly darkened distal area— ab. georgi Meissl is an extraordinary, dark brown aberration with the median band only... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 2 | Wadden Sea National Park | 🇩🇪 Germany | |
| 3 | Bavarian Forest National Park | 🇩🇪 Germany |
Rare
Under 5% of wildlife watchers report a Red Twin-Spot Carpet sighting in Moscow on a given day, based on 39 verified sightings from GBIF citizen-science data. It is the 269th most-seen of the 1111 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
May
In that month about 10% of wildlife watchers report a Red Twin-Spot Carpet in Moscow on a given day, against under 5% in June to April, the lowest months.
Between 11 pm and 2 am
Across all the parks we cover, that three-hour window holds the most Red Twin-Spot Carpet sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Among the best
Of the 2 cities where we can rate Red Twin-Spot Carpet sightings, Moscow ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in London (United Kingdom, under 5%).
GBIF citizen-science records
It is estimated from how often the Red Twin-Spot Carpet is recorded against all the insects logged in Moscow (39 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
