Epistrophella emarginata
In 3 days ~10% in a week ~20%
Epistrophella emarginata is a common North American species of hoverfly. Its larvae are aphid predators. When laying eggs, the female oviposits on the petioles of a leaf. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States | |
| 2 | Acadia National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Baltimore | 🇺🇸 United States | |
| 2 | Boston | 🇺🇸 United States | |
| 3 | Washington | 🇺🇸 United States | |
| 4 | Toronto | 🇨🇦 Canada | |
| 5 | Montreal | 🇨🇦 Canada | |
| 6 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Slender Smoothtail sighting in Baltimore on a given day, based on 11 verified sightings from GBIF citizen-science data. It is the 400th most-seen of the 705 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.
June and September
In those months about 10% of wildlife watchers report a Slender Smoothtail in Baltimore on a given day, against under 5% in July–August and October–May, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Slender Smoothtail sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 6 cities where we can rate Slender Smoothtail sightings, Baltimore has the highest daily chance: under 5%. Next come Boston (United States, under 5%) and Washington (United States, under 5%).
Same family: Syrphidae
The closest relatives of the Slender Smoothtail that you can see in Baltimore (family Syrphidae, Hover Flies) are Margined Calligrapher (about 10%), Eastern Calligrapher (about 10%) and Transverse-Banded Flower Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Slender Smoothtail is recorded against all the insects logged in Baltimore (11 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.
