Stigmella aceris
In 3 days ~10%
Stigmella aceris is a moth of the family Nepticulidae found in Europe. It was first described by Heinrich Frey in 1857. The moth flies from May to June and again in August depending on the location and has a wingspan of 3.7–4.7 mm.
Larvae mine the leaves of its food plant making a narrow corridor usually filling the entire width of the corridor with frass. Eggs are laid on field maple (Acer campestre), Amur maple (A. ginnala), Norway maple (A. platanoides) and Tatarian maple (A. tataricum). There is some debate as to whether the moth mines the leaves of sycamore (A. pseudoplatanus) with Plant Parasites of Europe stating that it is never found on sycamore and UKmoths stating it is found on sycamore. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Scarce Maple Pigmy sighting in Moscow on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 841st most-seen of the 1111 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Scarce Maple Pigmy in Moscow on a given day, so our monthly data shows no clear season.
10th of 10
Of the 10 cities where we can rate Scarce Maple Pigmy sightings, Moscow ranks 10th at under 5%. The best odds are in Budapest (Hungary, about 10%), Berlin (Germany, about 10%) and Kharkiv (Ukraine, about 10%).
Same order: Lepidoptera
The closest relatives of the Scarce Maple Pigmy that you can see in Moscow (order Lepidoptera, Butterflies and Moths) are Green-Veined White (about 10%), Scarce Tortoiseshell (about 10%) and Common Blue (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Scarce Maple Pigmy is recorded against all the insects logged in Moscow (7 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.
