Stigmella tityrella
In 3 days ~10% in a week ~20%
Stigmella tityrella is a species of moth in the family Nepticulidae. It is found in all of Europe west of Russia. The wingspan is 5–6 mm. The thick erect hairs on the head vertex are ochreous-yellowish. The collar is white. Antennal eyecaps are white. The forewings are shining bronzy-brown with a rather oblique shining golden-silvery fascia beyond middle; apical area beyond this dark bronzy-brown. Hindwings are grey; in male with an expansible pencil of blackish hairs at base of costa.
External image Adults are on wing from April to May and again from July to August. There are two generations per year. The larvae feed on beech (Fagus sylvatica), mining the leaves of their host plant. The mine consists of a corridor that does not widen much and zigzags between two lateral veins in the direction of the leaf margin. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | Birmingham | 🇬🇧 United Kingdom | |
| 3 | London | 🇬🇧 United Kingdom |
Rare
Under 5% of wildlife watchers report a Small Beech Pigmy sighting in London on a given day, based on 12 verified sightings from GBIF citizen-science data. It is the 1059th 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.
November
In that month about 10% of wildlife watchers report a Small Beech Pigmy in London on a given day, against under 5% in December to October, the lowest months.
3rd of 3
Of the 3 cities where we can rate Small Beech Pigmy sightings, London ranks 3rd at under 5%. The best odds are in Liverpool (United Kingdom, about 10%) and Birmingham (United Kingdom, under 5%).
Same genus: Stigmella
The closest relatives of the Small Beech Pigmy that you can see in London (genus Stigmella) are Golden Pigmy (about 10%) and Scarce Maple Pigmy (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Small Beech Pigmy is recorded against all the insects logged in London (12 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.
