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 Toronto on a given day, based on 39 verified sightings from GBIF citizen-science data. It is the 441st most-seen of the 1689 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.
November
In that month about 10% of wildlife watchers report a Smoky-Winged Woodlouse Fly in Toronto on a given day, against under 5% in December to October, the lowest months.
Among the best
Of the 6 cities where we can rate Smoky-Winged Woodlouse Fly sightings, Toronto ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Copenhagen (Denmark, 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 Toronto (39 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.
