Hydrellia tritici
In 3 days ~20% in a week ~40%
Hydrellia tritici, the black pasture fly or shore fly, is an insect native to Australia. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Otway National Park | 🇦🇺 Australia | |
| 2 | Blue Mountains National Park | 🇦🇺 Australia |
With luck
About 10% of wildlife watchers report a Black Pasture Fly sighting in Great Otway National Park on a given day, based on 13 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 162nd most-seen of the 418 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
May and September–February
In those months about 10% of wildlife watchers report a Black Pasture Fly in Great Otway National Park on a given day, against under 5% in March–April and June–August, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Black Pasture Fly sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 parks where we can rate Black Pasture Fly sightings, Great Otway National Park has the highest daily chance: about 10%. Next come Blue Mountains National Park (Australia, about 10%).
Same order: Diptera
The closest relatives of the Black Pasture Fly that you can see in Great Otway National Park (order Diptera, Flies) are Otway Glowworm (about 10%), Common Halfband (about 10%) and Southern Saltmarsh Mosquito (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Black Pasture Fly is recorded against all the insects logged in Great Otway National Park (13 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.
