Tephritis bardanae
In 3 days ~10% in a week ~20%
Tephritis bardanae is a picture-winged fly of the family Tephritidae, which are variously known as fruit-flies (North America) or gall flies (Britain and Ireland). The larvae feed in the flower-heads (capitula) of species of Arctium (burdocks), causing galls to form.
The larvae pupates in autumn, forming a black puparium. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Helsinki | 🇫🇮 Finland | |
| 2 | Stockholm | 🇸🇪 Sweden | |
| 3 | Brussels | 🇧🇪 Belgium | |
| 4 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 5 | Kazan | 🇷🇺 Russia | |
| 6 | Yekaterinburg | 🇷🇺 Russia | |
| 7 | London | 🇬🇧 United Kingdom | |
| 8 | Saint Petersburg | 🇷🇺 Russia | |
| 9 | Moscow | 🇷🇺 Russia |
Rare
Under 5% of wildlife watchers report a Burdock Fly sighting in Yekaterinburg on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 89th most-seen of the 155 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.
June and September
In those months about 10% of wildlife watchers report a Burdock Fly in Yekaterinburg on a given day, against under 5% in July–August and October–May, the lowest months. Those are among Yekaterinburg's wettest months, with about 75 mm of rain a month against 25 mm in February.
6th of 9
Of the 9 cities where we can rate Burdock Fly sightings, Yekaterinburg ranks 6th at under 5%. The best odds are in Helsinki (Finland, about 10%), Stockholm (Sweden, about 10%) and Brussels (Belgium, about 10%).
Same order: Diptera
The closest relatives of the Burdock Fly that you can see in Yekaterinburg (order Diptera, Flies) are Bathroom Moth Fly (about 10%), Marmalade Hover Fly (about 10%) and Common Drone Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Burdock Fly is recorded against all the insects logged in Yekaterinburg (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.
