Parcoblatta uhleriana
In 3 days ~10% in a week ~20%
Parcoblatta uhleriana, the Uhler's wood cockroach, is a species of Parcoblatta native to the United States and Canada. It is a forest species also found in disturbed and urban environments. The male of the species flies freely, while the female does not fly.
The male Parcoblatta uhleriana is a mostly uniform pale brownish-yellow, with slightly darker tegmina (outer forewings). It is relatively slender, with a broad head, and brownish stripe from the middle of its eyes downward. Its pronotum (the shield behind its head) is subelliptical (nearly elliptical), widest at the middle, and rounded angles.
The female of the species coloration is more variable, but is usually a shining blackish-brown, and sometimes a dark reddish-brown except its abdomen. Most of the legs, and the edges of the tegmina, are a chestnut brown. It is broader, with a wider head, than the male. Its pronotum is suborbicular (nearly round), widest near the base. Tegmina at most reach the second abdominal segment, and its wings are rudimentary.
Females are readily distinguished from allied species by their short, separated tegmina and shining black color, while males are more difficult to separate from... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Boston | 🇺🇸 United States | |
| 2 | Washington | 🇺🇸 United States | |
| 3 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report an Uhler's Wood Cockroach sighting in Washington on a given day, based on 15 verified sightings from GBIF citizen-science data. It is the 1064th most-seen of the 1807 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report an Uhler's Wood Cockroach in Washington on a given day, so our monthly data shows no clear season.
Among the best
Of the 3 cities where we can rate Uhler's Wood Cockroach sightings, Washington ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Boston (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Uhler's Wood Cockroach is recorded against all the insects logged in Washington (15 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.
