Thermonectus nigrofasciatus
In 3 days ~10% in a week ~20%
Thermonectus nigrofasciatus is a species of diving beetle native to the eastern United States. T. nigrofasciatus is distinguished by its black, postmedian transverse blotch on its elytra, hence "nigrofasciatus." Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Mottled Diving Beetle sighting in Austin on a given day, based on 13 verified sightings from GBIF citizen-science data. It is the 1026th most-seen of the 1624 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 Mottled Diving Beetle in Austin on a given day, so our monthly data shows no clear season.
Yes
Of the 2 cities where we can rate Mottled Diving Beetle sightings, Austin has the highest daily chance: under 5%. Next come Dallas (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Mottled Diving Beetle is recorded against all the insects logged in Austin (13 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.
