Pherbellia cinerella
In 3 days ~10% in a week ~20%
Pherbellia cinerella is a species of fly in the family Sciomyzidae. It is found in the Palearctic. P. cinerella is a dark and very characteristic Pherbellia and easy to recognise in the field by its long mid-frontal stripe and darkened anterior wing margin. The larva is predatory on a variety of terrestrial and aquatic snails including Helicidae, Galba truncatula, Helix, Helicella, Succinea and Lymnaea.There is little or no host preference. It is found in a wide range of habitats but it is most often found in warm and dry habitats such as coastal dunes and calcareous grassland where it can reach high numbers. It is also encountered in moist vegetation though in lesser numbers. It is a potential biological control agent. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Paris | 🇫🇷 France |
Rare
Under 5% of wildlife watchers report a Pherbellia cinerella sighting in Paris on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 743rd most-seen of the 916 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Pherbellia cinerella in Paris on a given day, so our monthly data shows no clear season.
Only Paris, in our data
Paris is the only city on Wallace's Line with enough records to rate Pherbellia cinerella sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Pherbellia cinerella is recorded against all the insects logged in Paris (6 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.
