Lonchoptera bifurcata
In 3 days ~10% in a week ~20%
Lonchoptera bifurcata is a species of spear-winged or pointed-winged flies in the family Lonchopteridae. It has a Holarctic distribution and is present in Europe, Asia and North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Small Grass Fly sighting in Boston on a given day, based on 22 verified sightings from GBIF citizen-science data. It is the 512th most-seen of the 1200 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.
January and October–November
In those months about 10% of wildlife watchers report a Small Grass Fly in Boston on a given day, against under 5% in February–September and December, the lowest months.
Among the best
Of the 6 cities where we can rate Small Grass Fly sightings, Boston ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Auckland (New Zealand, under 5%).
Same order: Diptera
The closest relatives of the Small Grass Fly that you can see in Boston (order Diptera, Flies) are Margined Calligrapher (about 20%), Eastern Calligrapher (about 20%) 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 Small Grass Fly is recorded against all the insects logged in Boston (22 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.
