Omophron americanum
In 3 days ~10%
Omophron americanum, the American round sand beetle, is a species of ground beetle in the family Carabidae. It is found in, as well as native to, North America, ranging across most of the United States and Canada, except British Columbia.
Omophron americanum has a broad and rather flat shape, with a length between 5.1 and 7.0 mm. Reddish-yellow with dark markings, its colour pattern is variable on its upper surface, with a darker, brown underside. It has a striated elytron, a V-shaped pale area on the frons, a punctuated metasternum, and two setae on the mesocoxa.
Its habitat is the immediate vicinity of usually standing waters, on bare or sparsely vegetated sandy or clay substrates. It exists in altitudes between 260 and 2,200 m. Copulation occurs between April and May. The female is typically gravid (pregnant) between May and June. Omophron americanum moults and becomes teneral between July and September. It overwinters in the adult stage.
These beetles are gregarious. They also stridulate. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Toronto | 🇨🇦 Canada |
Rare
Under 5% of wildlife watchers report an American Round Sand Beetle sighting in Toronto on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 1544th most-seen of the 1689 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report an American Round Sand Beetle in Toronto on a given day, so our monthly data shows no clear season.
Only Toronto, in our data
Toronto is the only city on Wallace's Line with enough records to rate American Round Sand Beetle sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the American Round Sand Beetle is recorded against all the insects logged in Toronto (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.
