Tropisternus collaris
In 3 days ~10% in a week ~20%
Tropisternus collaris, the collared water scavenger beetle, is a species of water scavenger beetle in the family Hydrophilidae. It is found in the Caribbean, North America, and South America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Cypress National Preserve | 🇺🇸 United States | |
| 2 | Everglades National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Dallas | 🇺🇸 United States | |
| 2 | Austin | 🇺🇸 United States | |
| 3 | Miami | 🇺🇸 United States | |
| 4 | Houston | 🇺🇸 United States | |
| 5 | Washington | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Tropisternus collaris sighting in Everglades National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 439th most-seen of the 496 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.
April and June–July
In those months about 10% of wildlife watchers report a Tropisternus collaris in Everglades National Park on a given day, against under 5% in May and August–March, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Tropisternus collaris sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
2nd of 2
Of the 2 parks where we can rate Tropisternus collaris sightings, Everglades National Park ranks 2nd at under 5%. The best odds are in Big Cypress National Preserve (United States, about 10%).
Same family: Hydrophilidae
The closest relatives of the Tropisternus collaris that you can see in Everglades National Park (family Hydrophilidae, Water Scavenger Beetles) are Hydrobiomorpha casta (about 10%) and Helobata larvalis (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Tropisternus collaris is recorded against all the insects logged in Everglades National Park (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.
