Lucilia silvarum
In 3 days ~10%
The common toad fly, Lucilia silvarum, is a member of the fly family Calliphoridae. This fly was first discovered by Johann Wilhelm Meigen in 1826 and is found most notably in European and Western Countries. This species of fly is known for the ability of its larvae to cause myiasis. In addition, this fly is common around carrion which it finds by smell, as well as areas of high filth concentration.
Like all true flies, adults have a single pair of wings, and like most of the Calliphoridae, they have a characteristic metallic color and plumose aristae. The adults (imago) of Lucilia silvarum are generally found to be between 4.5–10 mm (0.18–0.39 in). They are difficult to distinguish from many closely related green flies.
The larvae are typically about 2 mm (0.08 in) long when they first hatch, and grow in size to approximately 17 mm (0.7 in). Since the fly has been found to be a warm-weather fly, it is typically found in areas with temperatures between 75 °F (24 °C) and 85 °F (29 °C). Specifically, Lucilia silvarum is found in the countries: China, Denmark, United States, Finland, southern Norway, North Africa, Russia, and Canada. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toronto | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Marsh Greenbottle Fly sighting in Toronto on a given day, based on 12 verified sightings from GBIF citizen-science data. It is the 1068th most-seen of the 1689 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Marsh Greenbottle Fly in Toronto on a given day, so our monthly data shows no clear season.
Only Toronto, in our data
Toronto is the only city on Wallace's Line with enough records to rate Marsh Greenbottle Fly sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Marsh Greenbottle Fly is recorded against all the insects logged in Toronto (12 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.
