What are the chances of seeing a Phytomyza opacae in Philadelphia?
Rare
Under 5% of wildlife watchers report a Phytomyza opacae sighting in Philadelphia on a given day, based on 18 verified sightings from GBIF citizen-science data. It is the 352nd most-seen of the 632 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.
When is the best time to see a Phytomyza opacae in Philadelphia?
December to February
In those months about 10% of wildlife watchers report a Phytomyza opacae in Philadelphia on a given day, against under 5% in March to November, the lowest months.
What time of day is best to see a Phytomyza opacae?
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Phytomyza opacae sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Is Philadelphia the best place to see a Phytomyza opacae?
Among the best
Of the 3 cities where we can rate Phytomyza opacae sightings, Philadelphia ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Washington (United States, under 5%).
Where does the Phytomyza opacae sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Phytomyza opacae is recorded against all the insects logged in Philadelphia (18 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.