Moneilema armatum
In 3 days ~30% in a week ~60%
Moneilema armatum is a species of flat-faced longhorn in the family of beetles known as Cerambycidae. It is found in the southwestern United States and northern Mexico. The flightless beetles often feed on prickly pear cactus, boring into the stems and roots. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Guadalupe Mountains National Park | 🇺🇸 United States | |
| 2 | Big Bend National Park | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Black Cactus Longhorn Beetle sighting in Guadalupe Mountains National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 49th most-seen of the 57 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
January
In that month about 40% of wildlife watchers report a Black Cactus Longhorn Beetle in Guadalupe Mountains National Park on a given day, against under 5% in February–May, August–September and November–December, the lowest months.
Between 11 am and 2 pm
Across all the parks we cover, that three-hour window holds the most Black Cactus Longhorn Beetle sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Yes
Of the 2 parks where we can rate Black Cactus Longhorn Beetle sightings, Guadalupe Mountains National Park has the highest daily chance: about 10%. Next come Big Bend National Park (United States, about 10%).
Same order: Coleoptera
The closest relatives of the Black Cactus Longhorn Beetle that you can see in Guadalupe Mountains National Park (order Coleoptera, Beetles) are Obscure Darkling Beetle (about 30%), Stenomorpha opaca (about 20%) and Lampetis drummondi (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Black Cactus Longhorn Beetle is recorded against all the insects logged in Guadalupe Mountains National Park (5 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.
