Muscina stabulans
In 3 days ~10% in a week ~20%
Muscina stabulans (formerly Curtonevra stabulans), commonly known as the false stable fly, is a fly from the family Muscidae. As an adult, Muscina stabulans has partially reddish-brown legs, four characteristic dark stripes along the thorax region, and a pale spot above the thorax. These flies average 8 millimeters (0.3 inches) in length. The abdomen is either entirely black or black with red sides. Its head ranges in color from a dark-grey to a whitish hue. Circular spiracular plates can be found separated by about one plate's width in the posterior area.
Larvae are dullish-white in colour, 6–7 mm long and 1–1.5 mm wide. They consist of 11 segments, with all but the last having a belt of small, well-developed spines going towards the posterior margins. The pseudo-cephalic segment has two hooks. The posterior spiracles have curved spiracular slits.
The false stable fly was found in a study determining synanthropy (ecological association with humans) of adult Muscidae collected in urban, rural and natural environments in Valdivia, Chile. According to the study, M. stabulans are mostly found in rural and natural neighborhoods, and rarely inhabit cities... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Guiyang | 🇨🇳 China | |
| 2 | Athens | 🇬🇷 Greece | |
| 3 | Lima | 🇵🇪 Peru | |
| 4 | Buenos Aires | 🇦🇷 Argentina | |
| 5 | Beijing | 🇨🇳 China | |
| 6 | Vienna | 🇦🇹 Austria | |
| 7 | Berlin | 🇩🇪 Germany | |
| 8 | Lisbon | 🇵🇹 Portugal | |
| 9 | Yekaterinburg | 🇷🇺 Russia | |
| 10 | Helsinki | 🇫🇮 Finland |
Rare
Under 5% of wildlife watchers report a False Stable Fly sighting in Helsinki on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 732nd most-seen of the 838 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 False Stable Fly in Helsinki on a given day, so our monthly data shows no clear season.
10th of 13
Of the 13 cities where we can rate False Stable Fly sightings, Helsinki ranks 10th at under 5%. The best odds are in Guiyang (China, about 30%), Athens (Greece, about 10%) and Lima (Peru, about 10%).
GBIF citizen-science records
It is estimated from how often the False Stable Fly is recorded against all the insects logged in Helsinki (5 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.
