What are the chances of seeing a Bombylius cruciatus in Sierra Nevada National Park?
With luck
About 10% of wildlife watchers report a Bombylius cruciatus sighting in Sierra Nevada National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 282nd most-seen of the 479 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
When is the best time to see a Bombylius cruciatus in Sierra Nevada National Park?
June
In that month about 30% of wildlife watchers report a Bombylius cruciatus in Sierra Nevada National Park on a given day, against under 5% in August to May, the lowest months.
What time of day is best to see a Bombylius cruciatus?
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Bombylius cruciatus sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Is Sierra Nevada National Park the best place to see a Bombylius cruciatus?
Yes
Of the 3 parks where we can rate Bombylius cruciatus sightings, Sierra Nevada National Park has the highest daily chance: about 10%. Next come Cévennes National Park (France, under 5%) and Pyrénées National Park (France, under 5%).
Which relatives of the Bombylius cruciatus live in Sierra Nevada National Park?
Same family: Bombyliidae
The closest relatives of the Bombylius cruciatus that you can see in Sierra Nevada National Park (family Bombyliidae, Bee Flies) are Black Banded Bee Fly (about 10%), Hemipenthes velutina (about 10%) and Anthracite Bee-Fly (about 10%), with each one's daily chance of a sighting.
Where does the Bombylius cruciatus sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Bombylius cruciatus is recorded against all the insects logged in Sierra Nevada National Park (8 verified sightings from 2019 to 2026), 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.