Parcoblatta pennsylvanica
In 3 days ~10%
The Pennsylvania wood cockroach (Parcoblatta pennsylvanica) or Pennsylvanian cockroach is a common species of cockroach in eastern and central North America. Males are dark brown; the sides of the thorax and the front half of the wings are margined with yellow. Adult males are fully winged, while females have conspicuous wing pads (actually short wings like that of the female oriental cockroach), which are functionless. Wings of the male are longer than its body, while wing pads of the female cover only one-third to two-thirds of the abdomen. The males fly swiftly but do not have the ability to sustain themselves in the air for long periods.
The species occurs in open, timbered areas with little ground cover. According to entomologist Fred A. Lawson, it is "often seen on tree trunks and lower branches of oaks and elms after dark." Nymphs and adults are also found outdoors beneath loose bark in woodpiles, stumps, and hollow trees. Brought indoors on infested firewood, they wander about the house without congregating in any particular room. They can be especially troublesome during the mating season, which is during May and June. Male wood... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Pennsylvania Wood Cockroach sighting in New York City on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 1492nd most-seen of the 1623 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Pennsylvania Wood Cockroach in New York City on a given day, so our monthly data shows no clear season.
Only New York City, in our data
New York City is the only city on Wallace's Line with enough records to rate Pennsylvania Wood Cockroach sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Pennsylvania Wood Cockroach is recorded against all the insects logged in New York City (5 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.
