Cnephasia stephensiana
In 3 days ~10% in a week ~20%
Cnephasia stephensiana, the grey tortrix, is a species of moth of the family Tortricidae. It is found in the Palearctic realm, and has also been recorded from Canada. The wingspan is 18–23 mm. The moth has grey-variegated wings. It is quite variable in colour and some individuals may be contrastingly patterned. The forewing is rounded and light greyish with three, more or less distinct, irregular, darker transverse bands. The hind wing is pale greyish-brown. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Gray Tortrix sighting in London on a given day, based on 6 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 Gray Tortrix in London on a given day, so our monthly data shows no clear season.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Gray Tortrix sightings with a recorded time, and nearly all of them come between 6 pm and 6 am: it is mostly seen at night.
Among the best
Of the 2 cities where we can rate Gray Tortrix sightings, London ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Berlin (Germany, under 5%).
Same family: Tortricidae
The closest relatives of the Gray Tortrix that you can see in London (family Tortricidae, Tortricid Leafroller Moths) are Light Brown Apple Moth (about 20%), Common Marble (about 10%) and Clepsis dumicolana (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Gray Tortrix is recorded against all the insects logged in London (6 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.
