Bryotropha terrella
In 3 days ~20% in a week ~30%
Bryotropha terrella is a moth of the family Gelechiidae. It is the type species of the genus Bryotropha. It is found in Europe. The wingspan is 14–16 mm. Forewings very variable in ground colour - dark fuscous, shades of brown and grey to cream (coastal form), dark shining bronzy base of costa purplish-tinged. Variously showing the ‘bryotropha’ spots, a sub-terminal fascia and spots around the wing tip or unicolorous. Hindwings grey. Certain identification is by miscroscopic examination of the genitalia.
The moths are on wing from May to August depending on the location. The larvae feed on various mosses and grasses, including Rhytidiadelphus squarrosus, Syntrichia ruraliformis, Hypnum jutlandicum, Calliergonella cuspidata and Agrostis capillaris. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | London | 🇬🇧 United Kingdom | |
| 3 | Birmingham | 🇬🇧 United Kingdom |
With luck
About 10% of wildlife watchers report a Cinerous Neb sighting in London on a given day, based on 81 verified sightings from GBIF citizen-science data. It is the 425th most-seen of the 1504 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
June to August
In those months about 10% of wildlife watchers report a Cinerous Neb in London on a given day, against under 5% in September to May, the lowest months.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Cinerous Neb sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Among the best
Of the 3 cities where we can rate Cinerous Neb sightings, London ranks 2nd at about 10%, level with the leaders once rounded. The best odds are in Liverpool (United Kingdom, about 10%).
Same genus: Bryotropha
The closest relatives of the Cinerous Neb that you can see in London (genus Bryotropha) are Dark Groundling (about 10%) and House Neb (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Cinerous Neb is recorded against all the insects logged in London (81 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.
