Melanophora roralis
In 3 days ~10% in a week ~20%
Melanophora roralis is a species of woodlouse fly in the family Calliphoridae. M. roralis is 3–5.5 millimetres (0.12–0.22 in) long, black in colour with hairy antennae and a shiny thorax. It was introduced to North America from Europe and can be found from Southern Ontario to Chile and Argentina.
Species fly from mid-May to October and inhabit old forests and damp areas near the shore. The females of this species have a distinctive white spots at the tips of their wings and lay from 189 to 238 eggs in 6.5 to 7.5 hours. It takes up to 21 days for the species' to pupate. It is a parasite of Porcellio scaber. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Copenhagen | 🇩🇰 Denmark | |
| 2 | Toronto | 🇨🇦 Canada | |
| 3 | London | 🇬🇧 United Kingdom | |
| 4 | Montreal | 🇨🇦 Canada | |
| 5 | San Francisco | 🇺🇸 United States | |
| 6 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Smoky-Winged Woodlouse Fly sighting in London on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 1109th 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Smoky-Winged Woodlouse Fly in London on a given day, so our monthly data shows no clear season.
Among the best
Of the 6 cities where we can rate Smoky-Winged Woodlouse Fly sightings, London ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Copenhagen (Denmark, under 5%) and Toronto (Canada, under 5%).
GBIF citizen-science records
It is estimated from how often the Smoky-Winged Woodlouse Fly is recorded against all the insects logged in London (9 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.
