Cybister fimbriolatus
In 3 days ~10% in a week ~20%
Cybister fimbriolatus, the giant diving beetle, is a species of predaceous diving beetle in the family Dytiscidae. It is found in North America and the Neotropics. These beetles are active in summer and live in ponds or ditches, feeding on other aquatic arthropods. They are nocturnal but sometimes active during the day. For mating, the males have expanded front feet to help them grab hold of a female. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Padre Island National Seashore | 🇺🇸 United States | |
| 2 | Big Cypress National Preserve | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Dallas | 🇺🇸 United States | |
| 2 | Houston | 🇺🇸 United States | |
| 3 | Orlando | 🇺🇸 United States | |
| 4 | San Antonio | 🇺🇸 United States | |
| 5 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Fringed Diving Beetle sighting in San Antonio on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 625th most-seen of the 697 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.
June
In that month about 10% of wildlife watchers report a Fringed Diving Beetle in San Antonio on a given day, against under 5% in July to May, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Fringed Diving Beetle sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Among the best
Of the 5 cities where we can rate Fringed Diving Beetle sightings, San Antonio ranks 4th at under 5%, level with the leaders once rounded. The best odds are in Dallas (United States, under 5%), Houston (United States, under 5%) and Orlando (United States, under 5%).
Same order: Coleoptera
The closest relatives of the Fringed Diving Beetle that you can see in San Antonio (order Coleoptera, Beetles) are Asian Lady Beetle (about 30%), Seven-Spotted Lady Beetle (about 10%) and Dark Flower Scarab (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Fringed Diving Beetle is recorded against all the insects logged in San Antonio (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.
