Trogium pulsatorium
In 3 days ~10%
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 San Francisco on a given day, based on 6 verified sightings from GBIF citizen-science data. It is the 622nd most-seen of the 737 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 Larger Pale Booklouse in San Francisco on a given day, so our monthly data shows no clear season.
Among the best
Of the 4 cities where we can rate Larger Pale Booklouse sightings, San Francisco ranks 4th at under 5%, level with the leaders once rounded. The best odds are in Helsinki (Finland, under 5%), 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 San Francisco (6 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.
