Ranatra fusca
In 3 days ~10% in a week ~30%
Ranatra fusca is a water stick-insect in the family Nepidae, native to North America. It is known by the common name brown water scorpion. It is generally 3.2–4.2 cm (1.3–1.7 in) long. They are carnivorous and feed on other insects and crustaceans. They are most common from spring to autumn. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Great Bear Rainforest | 🇨🇦 Canada |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 2 | Vancouver | 🇨🇦 Canada | |
| 3 | Edmonton | 🇨🇦 Canada | |
| 4 | Chicago | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Brown Waterscorpion sighting in Great Bear Rainforest on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 178th most-seen of the 235 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.
July
In that month about 10% of wildlife watchers report a Brown Waterscorpion in Great Bear Rainforest on a given day, against under 5% in August to June, the lowest months. That is one of Great Bear Rainforest's driest months, with about 120 mm of rain against 480 mm in November.
Between 4 and 7 pm
Across all the parks we cover, that three-hour window holds the most Brown Waterscorpion sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Great Bear Rainforest, in our data
Great Bear Rainforest is the only park on Wallace's Line with enough records to rate Brown Waterscorpion sightings: under 5% of wildlife watchers there report one on a given day.
Same order: Hemiptera
The closest relatives of the Brown Waterscorpion that you can see in Great Bear Rainforest (order Hemiptera, True Bugs, Hoppers, Aphids, and allies) are Limnoporus notabilis (about 20%), Meadow Spittlebug (about 10%) and Red-Cross Shield Bug (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Brown Waterscorpion is recorded against all the insects logged in Great Bear Rainforest (6 verified sightings from 2019 to 2026), 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.
