Rhingia rostrata
In 3 days ~10% in a week ~20%
Rhingia rostrata is a small species of hoverfly, some 7 to 10 millimetres (0.28 to 0.39 in) in length, with a wing span of 11 to 16 mm (0.43 to 0.63 in). It is common in many parts of Europe from March until November, though is slightly less common than Rhingia campestris in many parts of it range. In Britain it is only found in southern England. It has a broad orange abdomen, but lacking the black line along the side of the abdomen as in Rhingia campestris. Also living Rhingia rostrata has an orange scutellum, though this fades to brown in dead specimens. But it still has the distinctive long snout of all Rhingia species. Larvae are associated with cow dung. Adults feed on nectar and pollen. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Birmingham | 🇬🇧 United Kingdom | |
| 2 | London | 🇬🇧 United Kingdom |
Rare
Under 5% of wildlife watchers report a Grey-Backed Snout-Hoverfly sighting in London on a given day, based on 29 verified sightings from GBIF citizen-science data. It is the 705th most-seen of the 1504 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.
April and May
In those months about 10% of wildlife watchers report a Grey-Backed Snout-Hoverfly in London on a given day, against under 5% in June to March, the lowest months.
2nd of 2
Of the 2 cities where we can rate Grey-Backed Snout-Hoverfly sightings, London ranks 2nd at under 5%. The best odds are in Birmingham (United Kingdom, about 10%).
Same family: Syrphidae
The closest relatives of the Grey-Backed Snout-Hoverfly that you can see in London (family Syrphidae, Hover Flies) are Yellow-Haired Sun Fly (about 40%), Marmalade Hover Fly (about 30%) and Hornet Mimic Hover Fly (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Grey-Backed Snout-Hoverfly is recorded against all the insects logged in London (29 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.
