Stigmella trimaculella
In 3 days ~10% in a week ~20%
Stigmella trimaculella is a moth of the family Nepticulidae. It is found in most of Europe, east to the eastern part of Palearctic realm. The wingspan is 5–6 millimetres (0.20–0.24 in). The thick erect hairs on the head vertex are ochreous-yellowish. The collar is white. Antennal eyecaps are whitish. The forewings are dark fuscous; a broad median longitudinal patch extending from base to near middle, and large opposite sometimes confluent triangular costal and dorsal spots beyond middle whitish-yellowish. Hindwings are grey. Abdomen of male yellowish, crimson-tinged. External image
Adults are on wing in May and again in August. The larvae feed on Populus alba, Populus angustifolia, Populus x canadensis, Populus candicans, Populus canescens, Populus deltoides, Populus nigra, Populus simonii, Populus suaveolens, Populus tremula and Populus trichocarpa. They mine the leaves of their host plant. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Black Poplar Pigmy sighting in London on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 1219th 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 Black Poplar Pigmy in London on a given day, so our monthly data shows no clear season.
Among the best
Of the 2 cities where we can rate Black Poplar Pigmy sightings, London ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Kyiv (Ukraine, under 5%).
Same genus: Stigmella
The closest relatives of the Black Poplar 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 Black Poplar Pigmy is recorded against all the insects logged in London (8 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.
