Noctua comes
In 3 days ~10% in a week ~20%
The lesser yellow underwing (Noctua comes) is a moth of the family Noctuidae. It is found in the Palearctic realm (Europe, North Africa, Canary Islands, Middle East, South Russia, Caucasus, Transcaucasia, Turkey, Iraq, Iran, Afghanistan, north-west India, Novosibirsk, Central Asia). It was introduced into British Columbia in about 1982 and has spread southward in the Pacific Northwest. It has recently been reported from Ontario (Crolla 2008). Full synonymy given in Lafontaine. It is a common species but not as abundant as its larger relative large yellow underwing (Noctua pronuba).
This species generally has the appearance of a smaller (wingspan 38–48 mm) version of the large yellow underwing Noctua pronuba. The forewings are equally variable in pattern and colour, from pale clay to reddish clay, light brown to almost black. The stigmata are dark and outlined with pale yellow. The crosslines are weak. The wavy line flows on to the front edge as a no more than dark brown (never black) stain, which is sometimes extended down the entire wavy line. The hindwings are orange-yellow with a broad black sub-terminal band and central discal lunule (usually... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 2 | Cairngorms National Park | 🇬🇧 United Kingdom | |
| 3 | Wadden Sea National Park | 🇩🇪 Germany | |
| 4 | Sierra Nevada National Park | 🇪🇸 Spain | |
| 5 | Cévennes National Park | 🇫🇷 France | |
| 6 | Fertő-Hanság National Park | 🇭🇺 Hungary | |
| 7 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 8 | Pyrénées National Park | 🇫🇷 France | |
| 9 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | London | 🇬🇧 United Kingdom | |
| 3 | Manchester | 🇬🇧 United Kingdom | |
| 4 | Birmingham | 🇬🇧 United Kingdom | |
| 5 | Budapest | 🇭🇺 Hungary | |
| 6 | Vienna | 🇦🇹 Austria | |
| 7 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 8 | Paris | 🇫🇷 France | |
| 9 | Berlin | 🇩🇪 Germany | |
| 10 | Lyon | 🇫🇷 France |
Rare
Under 5% of wildlife watchers report a Lesser Yellow Underwing sighting in Toronto on a given day, based on 34 verified sightings from GBIF citizen-science data. It is the 490th most-seen of the 1689 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Lesser Yellow Underwing in Toronto on a given day, so our monthly data shows no clear season.
Between 11 pm and 2 am
Across all the parks we cover, that three-hour window holds the most Lesser Yellow Underwing sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is seen both by day and at night.
28th of 29
Of the 29 cities where we can rate Lesser Yellow Underwing sightings, Toronto ranks 28th at under 5%. The best odds are in Liverpool (United Kingdom, about 40%), London (United Kingdom, about 20%) and Manchester (United Kingdom, about 20%).
GBIF citizen-science records
It is estimated from how often the Lesser Yellow Underwing is recorded against all the insects logged in Toronto (34 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.
