Boyeria vinosa
In 3 days ~10% in a week ~20%
Boyeria vinosa, the fawn darner, is a species of dragonfly in the family Aeshnidae. It is found in south-eastern Canada and eastern USA. Its natural habitat is rivers. They are most active at dusk, and may be common but overlooked in an area due to only being active in low light conditions.
Fawn darner adults are brown and rather featureless except for two bold yellow/white spots on each side of the thorax. The abdomen is brown with faint yellow markings. The wings have small brown patches at their bases and become tinted brown with age. Sexes may be distinguished by eye color (some blue/green in males, all-brown in females), abdomen thickness, and cerci length.
The genus name Boyeria refers to the French entomologist E. L. J. H. Boyer de Fonscolombe. The specific epithet vinosa means "full of wine", which may refer to either the coloration or its sometime irregular flight. The common name "fawn darner" refers to the adult being brown with pale spots like a deer fawn, and being a member of the darner family Aeshnidae.
Fawn darners cruise or patrol clearings or over water to forage and look for mates, often in late afternoon or early... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Congaree National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toronto | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report a Fawn Darner sighting in Toronto on a given day, based on 12 verified sightings from GBIF citizen-science data. It is the 945th 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Fawn Darner in Toronto on a given day, so our monthly data shows no clear season.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Fawn Darner sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Toronto, in our data
Toronto is the only city on Wallace's Line with enough records to rate Fawn Darner sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Aeshnidae
The closest relatives of the Fawn Darner that you can see in Toronto (family Aeshnidae, Darners) are Common Green Darner (about 10%) and Shadow Darner (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Fawn Darner 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.
