Heteropogon macerinus
In 3 days ~10% in a week ~30%
Heteropogon macerinus is a species of robber fly in the family Asilidae. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Baltimore | 🇺🇸 United States | |
| 2 | Washington | 🇺🇸 United States | |
| 3 | Chicago | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Eastern Twigsitter sighting in Washington on a given day, based on 82 verified sightings from GBIF citizen-science data. It is the 338th most-seen of the 1807 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
August and September
In those months about 10% of wildlife watchers report an Eastern Twigsitter in Washington on a given day, against under 5% in October to July, the lowest months.
Among the best
Of the 3 cities where we can rate Eastern Twigsitter sightings, Washington ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Baltimore (United States, under 5%).
Same family: Asilidae
The closest relatives of the Eastern Twigsitter that you can see in Washington (family Asilidae, Robber Flies) are Eastern Lion Fly (about 10%) and Plain-Tailed Hanging Thief (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Eastern Twigsitter is recorded against all the insects logged in Washington (82 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.
