Nephopterix angustella
In 3 days ~10% in a week ~20%
Nephopterix angustella is a moth of the family Pyralidae described by Jacob Hübner in 1796. It is found in Europe. The wingspan is 20–25 millimetres (0.8–1.0 in).The forewings are greyish ochreous, mixed with reddish-ochreous, somewhat sprinkled with ashy-whitish, ith a few black scales, tending to form short dashes in disc; a thick erect bar of blackish raised scales from dorsum before first line, reaching 3/4 across wing; first line faintly paler, obscurely reddish-edged; second obscure, marked with some short black dashes towards costa; some indistinct black terminal dots. Hindwings fuscous-whitish, termen fuscous. The larva is dull green or ochreous-yellow; dorsal line darker; lateral and more obscure spiracular series of ferruginous or purplish marks; head brown; 3 with black lateral spot: in berries of Euonymus
The moth flies from May to October depending on the location. The larvae feed on bird cherry and Euonymus europaeus Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Wadden Sea National Park | 🇩🇪 Germany | |
| 2 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | London | 🇬🇧 United Kingdom |
Rare
Under 5% of wildlife watchers report a Spindle Knot-Horn sighting in London on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 1394th 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Spindle Knot-Horn in London 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 Spindle Knot-Horn 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.
Only London, in our data
London is the only city on Wallace's Line with enough records to rate Spindle Knot-Horn sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Pyralidae
The closest relatives of the Spindle Knot-Horn that you can see in London (family Pyralidae, Pyralid Snout Moths) are Rosy Tabby (about 10%), Bee Moth (about 10%) and Grey Knot-Horn (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Spindle Knot-Horn is recorded against all the insects logged in London (5 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.
