Laphria franciscana
In 3 days ~10% in a week ~20%
Laphria franciscana is a species of robber flies in the family Asilidae. It is found in northeastern North America, including southern Ontario, Manitoba, Quebec, Nova Scotia and Maine, with its southernmost distribution being in Texas and Florida. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Yosemite National Park | 🇺🇸 United States |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Portland | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Western Black Laphria sighting in Portland on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 378th most-seen of the 507 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.
July
In that month about 10% of wildlife watchers report a Western Black Laphria in Portland on a given day, against under 5% in August to June, the lowest months. That is one of Portland's driest months, with about 10 mm of rain against 250 mm in December.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Western Black Laphria sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
Only Portland, in our data
Portland is the only city on Wallace's Line with enough records to rate Western Black Laphria sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Western Black Laphria is recorded against all the insects logged in Portland (8 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.
