Anorthoa munda
In 3 days ~10% in a week ~30%
Perigrapha munda, the twin-spotted Quaker, is a species of moth of the family Noctuidae. The wings are gray, with two closely approximate and very conspicuous dark spots on the disc of the fore wings. a small dark apical mark at the costal edge and a discal spot on the fuscous hindwings. It is found in Palearctic realm (all Europe (absent only in the North and in the South), Russia, and Asia as far east as Japan).
The wingspan is 38–44 mm. The moth flies from March to May depending on the location. The larvae feed on oak, willow, Populus tremula, Fraxinus excelsior, Acer campestre, Humulus lupulus and honeysuckle. The nectar-feeding adults visit sallow blossom. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 3 | Pyrénées National Park | 🇫🇷 France |
Rare
Under 5% of wildlife watchers report a Twin-Spotted Quaker sighting in Vienna on a given day, based on 31 verified sightings from GBIF citizen-science data. It is the 426th most-seen of the 1406 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
March to May
In those months about 10% of wildlife watchers report a Twin-Spotted Quaker in Vienna on a given day, against under 5% in June to February, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Twin-Spotted Quaker 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.
3rd of 9
Of the 9 cities where we can rate Twin-Spotted Quaker sightings, Vienna ranks 3rd at under 5%. The best odds are in Prague (Czechia, about 10%) and Paris (France, under 5%).
Same family: Noctuidae
The closest relatives of the Twin-Spotted Quaker that you can see in Vienna (family Noctuidae, Cutworm Moths and Allies) are Silver Υ (about 20%), Large Yellow Underwing (about 10%) and Cotton Bollworm Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Twin-Spotted Quaker is recorded against all the insects logged in Vienna (31 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.
