Trogium pulsatorium
In 3 days ~10% in a week ~30%
Trogium pulsatorium, known generally as larger pale booklouse, is a species of granary booklouse in the family Trogiidae. Other common names include the deathwatch, common booklouse, and grain psocid. It is found in Africa, Australia, Europe and Northern Asia (excluding China), Central America, North America, Southern Asia, New Zealand, and Antarctica. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Helsinki | 🇫🇮 Finland | |
| 2 | Auckland | 🇳🇿 New Zealand | |
| 3 | Sydney | 🇦🇺 Australia | |
| 4 | San Francisco | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Larger Pale Booklouse sighting in Helsinki on a given day, based on 12 verified sightings from GBIF citizen-science data. It is the 480th most-seen of the 838 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
June and July
In those months about 10% of wildlife watchers report a Larger Pale Booklouse in Helsinki on a given day, against under 5% in August to May, the lowest months.
Yes
Of the 4 cities where we can rate Larger Pale Booklouse sightings, Helsinki has the highest daily chance: under 5%. Next come Auckland (New Zealand, under 5%) and Sydney (Australia, under 5%).
GBIF citizen-science records
It is estimated from how often the Larger Pale Booklouse is recorded against all the insects logged in Helsinki (12 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.
