Zopherus nodulosus
In 3 days ~20% in a week ~40%
Zopherus nodulosus is a species of ironclad beetle in the family Zopheridae. It is found in Central America and North America. It can grow between 1.5 and 2 centimetres in length. The body is a blotchy black-and-white pattern, and the legs are fully black. The subspecies name, haldemani, references the Haldeman brothers, Samuel Haldeman and Horace Haldeman, the former a naturalist and philologist, the latter a soldier and one of the first people to concentrate on insect collection in Texas.
They are thought to feed on lichen and dead plant material. Females have been observed laying eggs on American elms, and larvae and pupae have been found in pecan wood, which "apparently serves as the developmental site for this species". They are found in East and Central Texas.
Z. n. nodulosus can grow between 1.4 and 2.8 centimetres in length, and 0.5 to 1.1 cm in width. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cumbres de Monterrey National Park | 🇲🇽 Mexico |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Austin | 🇺🇸 United States | |
| 2 | San Antonio | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Zopherus nodulosus sighting in Cumbres de Monterrey National Park on a given day, based on 24 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 111th most-seen of the 431 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.
April
In that month about 20% of wildlife watchers report a Zopherus nodulosus in Cumbres de Monterrey National Park on a given day, against under 5% in May and August–January, the lowest months.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Zopherus nodulosus sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Cumbres de Monterrey National Park, in our data
Cumbres de Monterrey National Park is the only park on Wallace's Line with enough records to rate Zopherus nodulosus sightings: about 10% of wildlife watchers there report one on a given day.
Same order: Coleoptera
The closest relatives of the Zopherus nodulosus that you can see in Cumbres de Monterrey National Park (order Coleoptera, Beetles) are Chrysina psittacina (about 20%), Asian Lady Beetle (about 10%) and Convergent Lady Beetle (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Zopherus nodulosus is recorded against all the insects logged in Cumbres de Monterrey National Park (24 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.
