Trogium pulsatorium
In 3 days ~10% in a week ~20%
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 Sydney on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 666th most-seen of the 742 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 a Larger Pale Booklouse in Sydney 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, Sydney ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Helsinki (Finland, under 5%) and Auckland (New Zealand, under 5%).
GBIF citizen-science records
It is estimated from how often the Larger Pale Booklouse is recorded against all the insects logged in Sydney (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.
