Rhingia campestris
In 3 days ~10% in a week ~30%
Rhingia campestris is a species of hoverfly, 7–11 millimetres (0.3–0.4 in) long, with a wingspan of 12–18 mm (0.5–0.7 in). It is common across the Palearctic from March until November. It has a broad orange abdomen with a black line along the sides (the black line is absent along the sides of Rhingia rostrata), and has the distinctive long snout of all Rhingia species. Rhingia campestris is the main pollinator for many plant species and due to its long snout it can forage on tubulous flowers. Larvae are associated with cow dung. Adults males feed on nectar, while adult females feed on protein rich pollen, reflecting the cost of developing eggs.
External images For terms see Morphology of DipteraWing length 5.5–7 mm. Snout straight, longer than the diameter of the eye in side view. Tergites with black hind edge and side margins and often with a black mark in the middle of the tergite. Pre-genital sternite black-haired. Tibiae red.
See references for determination Palearctic Fennoscandia South to the Pyrenees, Spain and the Mediterranean basin. Ireland East through Europe into European Russia and the Caucasus then to Siberia, Mongolia and the Russian... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cairngorms National Park | 🇬🇧 United Kingdom | |
| 2 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 3 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Leeds | 🇬🇧 United Kingdom | |
| 2 | Manchester | 🇬🇧 United Kingdom | |
| 3 | Birmingham | 🇬🇧 United Kingdom |
With luck
About 10% of wildlife watchers report a Heineken Fly sighting in Leeds on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 195th most-seen of the 284 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
April–May and August
In those months about 10% of wildlife watchers report a Heineken Fly in Leeds on a given day, against under 5% in June–July and September–March, the lowest months.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Heineken Fly sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 3 cities where we can rate Heineken Fly sightings, Leeds has the highest daily chance: about 10%. Next come Manchester (United Kingdom, under 5%) and Birmingham (United Kingdom, under 5%).
Same family: Syrphidae
The closest relatives of the Heineken Fly that you can see in Leeds (family Syrphidae, Hover Flies) are Marmalade Hover Fly (about 20%), Tapered Drone Fly (about 20%) and Sun Fly (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Heineken Fly is recorded against all the insects logged in Leeds (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.
