Hydrobiomorpha casta
In 3 days ~20% in a week ~40%
Hydrobiomorpha casta is a species of water scavenger beetle in the family Hydrophilidae. It is found in the Caribbean, Central America, and North America. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Cypress National Preserve | 🇺🇸 United States | |
| 2 | Everglades National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Hydrobiomorpha casta sighting in Big Cypress National Preserve on a given day, based on 11 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 173rd most-seen of the 262 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
May and June
In those months about 20% of wildlife watchers report a Hydrobiomorpha casta in Big Cypress National Preserve on a given day, against under 5% in April and August–February, the lowest months. Those are among Big Cypress National Preserve's wettest months, with about 200 mm of rain a month against 40 mm in March.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Hydrobiomorpha casta sightings with a recorded time, and about 9 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Yes
Of the 2 parks where we can rate Hydrobiomorpha casta sightings, Big Cypress National Preserve has the highest daily chance: about 10%. Next come Everglades National Park (United States, about 10%).
Same family: Hydrophilidae
The closest relatives of the Hydrobiomorpha casta that you can see in Big Cypress National Preserve (family Hydrophilidae, Water Scavenger Beetles) are Helobata larvalis (about 10%), Hydrophilus ovatus (about 10%) and Tropisternus collaris (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Hydrobiomorpha casta is recorded against all the insects logged in Big Cypress National Preserve (11 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.
