Temnostoma excentricum
In 3 days ~10% in a week ~20%
Temnostoma excentrica (Harris, 1841 ), the Black-spotted Falsehorn, is a common species of syrphid fly observed throughout the United States and Canada. Hoverflies can remain nearly motionless in flight. The adults are also known as flower flies for they are commonly found on flowers, from which they get both energy-giving nectar and protein-rich pollen. Temnostoma adults are strong wasp mimics. The larvae burrow in moist decayed wood. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Elk Island National Park | 🇨🇦 Canada | |
| 2 | Acadia National Park | 🇺🇸 United States | |
| 3 | Great Smoky Mountains National Park | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Temnostoma excentricum sighting in Vancouver on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 404th most-seen of the 482 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 Temnostoma excentricum in Vancouver on a given day, so our monthly data shows no clear season.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Temnostoma excentricum sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 2 cities where we can rate Temnostoma excentricum sightings, Vancouver ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Edmonton (Canada, under 5%).
Same family: Syrphidae
The closest relatives of the Temnostoma excentricum that you can see in Vancouver (family Syrphidae, Hover Flies) are Black-Margined Flower Fly (about 10%), Common Drone Fly (about 10%) and Eurasian Drone Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Temnostoma excentricum is recorded against all the insects logged in Vancouver (6 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.
