Eriothrix rufomaculatus
In 3 days ~30% in a week ~60%
Eriothrix rufomaculatus is a species of fly in the family Tachinidae. Turkmenistan, Uzbekistan, China, British Isles, Czech Republic, Estonia, Hungary, Latvia, Moldova, Poland, Romania, Slovakia, Ukraine, Denmark, Finland, Norway, Sweden, Bosnia and Herzegovina, Bulgaria, Croatia, Greece, Italy, Macedonia, Portugal, Serbia, Slovenia, Spain, Turkey, Austria, Belgium, Channel Islands, France, Germany, Netherlands, Switzerland, Kazakhstan, North Korea, Iran, Israel, Palestine, Russia, Azerbaijan.
These rather common flies mainly inhabit hedge rows, grasslands or sunny rough ground, meadows, ruderal areas and fields. Eriothrix rufomaculatus can reach a length of 5–10 millimetres (0.20–0.39 in) and a wingspan of 13–15 mm. This bristly species shows a greyish thorax with four narrow black stripes and a prominent but quite variable orange patches on the sides of its cylindrical abdomen, separated by a dorsal black line. Its face is silvery, with a protruding mouth edge. The legs are black. Wings are slightly shaded, yellowish at the base. Vein-m is petiolate and costal spine is longer than vein r-m.
Eriothrix rufomaculatus is... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cairngorms National Park | 🇬🇧 United Kingdom | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 3 | Wadden Sea National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Birmingham | 🇬🇧 United Kingdom | |
| 2 | Liverpool | 🇬🇧 United Kingdom | |
| 3 | London | 🇬🇧 United Kingdom | |
| 4 | Manchester | 🇬🇧 United Kingdom | |
| 5 | Helsinki | 🇫🇮 Finland | |
| 6 | Hamburg | 🇩🇪 Germany | |
| 7 | Copenhagen | 🇩🇰 Denmark | |
| 8 | Warsaw | 🇵🇱 Poland | |
| 9 | Essen | 🇩🇪 Germany | |
| 10 | Munich | 🇩🇪 Germany |
With luck
About 10% of wildlife watchers report a Red Spotted Parasite Fly sighting in London on a given day, based on 249 verified sightings from GBIF citizen-science data. It is the 138th 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.
July
In that month about 30% of wildlife watchers report a Red Spotted Parasite Fly in London on a given day, against under 5% in October to May, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Red Spotted Parasite Fly sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 17 cities where we can rate Red Spotted Parasite Fly sightings, London ranks 3rd at about 10%, level with the leaders once rounded. The best odds are in Birmingham (United Kingdom, about 10%) and Liverpool (United Kingdom, about 10%).
Same family: Tachinidae
The closest relatives of the Red Spotted Parasite Fly that you can see in London (family Tachinidae, Tachinid Flies) are Common Tachinid (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 Red Spotted Parasite Fly is recorded against all the insects logged in London (249 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.
