Haematopota pluvialis
In 3 days ~10%
The common horse fly (Haematopota pluvialis), also known as the notch-horned cleg fly, or simply cleg in Scotland and northern parts of Ireland, is a fly species belonging to the family Tabanidae subfamily Tabaninae. This species is present in most of Europe, in the Near East, and in the eastern Palearctic realm. It mainly lies in heath and moorland, and in spruce forest edge.
Common horse flies can reach a length of 5–11.5 millimetres (0.20–0.45 in), with a wingspan of 8–10 mm. This species has large compound eyes necessary for locating its prey. They are hairy and brightly colored, with stripes extended over most of the eye. In males, the eyes touch at the centre of the frons and the colored stripes are restricted to the lower part.
The first antennal segment is quite bulbous and has a strong sub-apical notch in the female. The thorax is grey, with black longitudinal stripes. The abdomen shows a dark background with a series of lateral pale spots and clearer bands at the end of each black segment. Also the wings have a distinctive pattern, being dark mottled by several clear spots. The legs are black, with yellowish-brown rings.
This... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Moscow | 🇷🇺 Russia |
Rare
Under 5% of wildlife watchers report a Notch-Horned Cleg sighting in Moscow on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 911th 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 Notch-Horned Cleg in Moscow on a given day, so our monthly data shows no clear season.
Between 5 and 8 pm
Across all the parks we cover, that three-hour window holds the most Notch-Horned Cleg sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is most active around dawn and dusk.
Only Moscow, in our data
Moscow is the only city on Wallace's Line with enough records to rate Notch-Horned Cleg sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Notch-Horned Cleg 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.
