Orthosoma brunneum
In 3 days ~10% in a week ~20%
Orthosoma is a genus of beetles in the family Cerambycidae. It is monotypic, being represented by the single species Orthosoma brunneum. The genus name Orthosoma was also previously used for a microsporidian genus. As the name is pre-occupied by this beetle genus, the name for the microsporidian has been changed to Orthosomella. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 2 | Shenandoah National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Baltimore | 🇺🇸 United States | |
| 2 | Washington | 🇺🇸 United States | |
| 3 | Philadelphia | 🇺🇸 United States | |
| 4 | New York City | 🇺🇸 United States | |
| 5 | Toronto | 🇨🇦 Canada | |
| 6 | Boston | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Brown Prionid sighting in Philadelphia on a given day, based on 13 verified sightings from GBIF citizen-science data. It is the 327th 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.
July
In that month about 10% of wildlife watchers report a Brown Prionid in Philadelphia on a given day, against under 5% in August to June, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Brown Prionid sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Among the best
Of the 6 cities where we can rate Brown Prionid sightings, Philadelphia ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Baltimore (United States, under 5%) and Washington (United States, under 5%).
Same family: Cerambycidae
The closest relatives of the Brown Prionid that you can see in Philadelphia (family Cerambycidae, Longhorn Beetles) are Red Milkweed Beetle (about 10%), Broad-Necked Root Borer (about 10%) and Locust Borer (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Brown Prionid is recorded against all the insects logged in Philadelphia (13 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.
