Plemyria rubiginata
In 3 days ~10% in a week ~20%
Plemyria rubiginata, the blue-bordered carpet, is a moth of the family Geometridae found in Europe and across the Palearctic. The moth was first described by the Austrian lepidopterists Michael Denis and Ignaz Schiffermüller in 1775.
The wingspan is 22–28 mm. The ground colour of the forewings is milky white. The basal field is light brown to black brown. A large light brown to black-brown stain on the costa near the centre stands out. The intensity and shape of this spot can vary. From the apex area runs a blue-grey marginal band which continues on the hindwings usually in an attenuated form. A thin white squiggly line is visible in this band. The forewings and hindwings each show a black discal fleck, which can be sometimes be very unclear. "White, more glossy than in any succeeding species of the group, yet more thinly scaled than ocellata. Forewing with brown basal patch and anterior half of median band, both wings with more or less well-defined bluish-smoky distal border. — ab. parvula Retz. has, in addition a dark spot at the middle of the hindmargin of the forewing. — In ab. guttata Huene the median band is reduced to a mere spot surrounding the discal dot... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Wadden Sea National Park | 🇩🇪 Germany |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Blue-Bordered Carpet sighting in London on a given day, based on 16 verified sightings from GBIF citizen-science data. It is the 873rd most-seen of the 1504 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.
June
In that month about 10% of wildlife watchers report a Blue-Bordered Carpet in London on a given day, against under 5% in July to May, the lowest months.
Between 1 and 4 am
Across all the parks we cover, that three-hour window holds the most Blue-Bordered Carpet sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Among the best
Of the 4 cities where we can rate Blue-Bordered Carpet sightings, London ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Liverpool (United Kingdom, under 5%) and Helsinki (Finland, under 5%).
Same family: Geometridae
The closest relatives of the Blue-Bordered Carpet that you can see in London (family Geometridae, Geometer Moths) are Riband Wave (about 20%), Least Carpet (about 20%) and Double-Striped Pug (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Blue-Bordered Carpet is recorded against all the insects logged in London (16 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.
