Xanthorhoe spadicearia
In 3 days ~20% in a week ~40%
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 |
With luck
About 10% of wildlife watchers report a Red Twin-Spot Carpet sighting in Snowdonia National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 264th most-seen of the 387 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
April and July–August
In those months about 10% of wildlife watchers report a Red Twin-Spot Carpet in Snowdonia National Park on a given day, against under 5% in May–June and September–March, 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.
Yes
Of the 3 parks where we can rate Red Twin-Spot Carpet sightings, Snowdonia National Park has the highest daily chance: about 10%. Next come Wadden Sea National Park (Germany, about 10%) and Bavarian Forest National Park (Germany, under 5%).
Same genus: Xanthorhoe
The closest relatives of the Red Twin-Spot Carpet that you can see in Snowdonia National Park (genus Xanthorhoe) are Flame Carpet (about 20%), Dark-Barred Twin-Spot Carpet (about 10%) and Silver-Ground Carpet (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Red Twin-Spot Carpet is recorded against all the insects logged in Snowdonia National Park (7 verified sightings from 2019 to 2026), 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.
