Sericomyia lata
In 3 days ~10% in a week ~30%
Sericomyia lata (Coquillett 1907), the White-spotted Pond Fly, is a common species of syrphid fly observed across North America, concentrated in the east. Syrphid flies are also known as Hover Flies or Flower Flies because the adults are frequently found hovering around flowers from which they feed on nectar and pollen. Adults are 11.6–15.2 mm (0.46–0.60 in) long and black with large white abdominal spots. The larvae of this genus are known as rat tailed maggots for the long posterior breathing tube. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Acadia National Park | 🇺🇸 United States |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a White-Spotted Pond Fly sighting in Acadia National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 347th most-seen of the 405 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.
June
In that month about 10% of wildlife watchers report a White-Spotted Pond Fly in Acadia National Park on a given day, against under 5% in July to May, the lowest months.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most White-Spotted Pond Fly sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Only Acadia National Park, in our data
Acadia National Park is the only park on Wallace's Line with enough records to rate White-Spotted Pond Fly sightings: under 5% of wildlife watchers there report one on a given day.
Same genus: Sericomyia
The closest relatives of the White-Spotted Pond Fly that you can see in Acadia National Park (genus Sericomyia, Pond Flies) are Oblique-Banded Pond Fly (about 10%) and Narrow-Banded Pond Fly (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the White-Spotted Pond Fly is recorded against all the insects logged in Acadia National Park (5 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.
