Tachina fera
In 3 days ~30% in a week ~60%
Tachina fera is a species of fly in the genus Tachina of the family Tachinidae. It was first described by Carl Linnaeus in 1761. This species can be found in the entire Palearctic realm, across Europe as far north as Scandinavia and European Russia. It is also present in Israel and North Asia, east to China, Mongolia, Korea, and Japan, and in North Africa.
These flies inhabit the vegetation of humid regions, meadows, woodland, forests, forest edges, clearings, heath and moorland and natural gardens. Tachina fera can reach a length of 9–14 millimetres (0.35–0.55 in), with a wingspan of 16–27 mm. These tachinids show a grayish upperside of the thorax, due to dense pollinosity, with regular black stripes. The abdomen is yellow orange with a wide black dorsal stripe ending in a point. They are bristly on the thorax and abdomen, especially towards the tip, where they have long thorn-shaped, protruding black bristles. Close to the thorax there is a striking, orange-red and shiny 'bump' called postscutellum, with a thin black edge. The head is yellowish colored, with long antennae, whose second segment is yellow, while the third, much shorter... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | London | 🇬🇧 United Kingdom | |
| 2 | Birmingham | 🇬🇧 United Kingdom | |
| 3 | Copenhagen | 🇩🇰 Denmark | |
| 4 | Liverpool | 🇬🇧 United Kingdom | |
| 5 | Warsaw | 🇵🇱 Poland | |
| 6 | Essen | 🇩🇪 Germany | |
| 7 | Berlin | 🇩🇪 Germany | |
| 8 | Manchester | 🇬🇧 United Kingdom | |
| 9 | Hamburg | 🇩🇪 Germany | |
| 10 | Prague | 🇨🇿 Czechia |
With luck
About 10% of wildlife watchers report a Common Tachinid sighting in London on a given day, based on 242 verified sightings from GBIF citizen-science data. It is the 146th most-seen of the 1504 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
August and September
In those months about 20% of wildlife watchers report a Common Tachinid in London on a given day, against under 5% in November to March, the lowest months.
Yes
Of the 17 cities where we can rate Common Tachinid sightings, London has the highest daily chance: about 10%. Next come Birmingham (United Kingdom, about 10%) and Copenhagen (Denmark, about 10%).
Same family: Tachinidae
The closest relatives of the Common Tachinid that you can see in London (family Tachinidae, Tachinid Flies) are Red Spotted Parasite Fly (about 10%), Phania funesta (about 10%) and Gymnocheta viridis (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Common Tachinid is recorded against all the insects logged in London (242 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.
