Xylocopa tabaniformis
In 3 days ~50% in a week ~80%
Xylocopa tabaniformis, the horsefly-like carpenter bee or mountain carpenter bee is a species of carpenter bee in the family Apidae. It is found in Central America, North America, and South America. It is 12–18 millimetres (15⁄32–23⁄32 in) long and black. Males have yellow hair on the thorax.
Xylocopa tabaniformis tabaniformis Smith, 1854 Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Reserva de la Biosfera Mariposa Monarca | 🇲🇽 Mexico | |
| 2 | Zion National Park | 🇺🇸 United States | |
| 3 | Sequoia and Kings Canyon National Parks | 🇺🇸 United States | |
| 4 | Cumbres de Monterrey National Park | 🇲🇽 Mexico | |
| 5 | Yosemite National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sacramento | 🇺🇸 United States | |
| 2 | Salt Lake City | 🇺🇸 United States | |
| 3 | Mexico City | 🇲🇽 México | |
| 4 | Toluca | 🇲🇽 México | |
| 5 | Austin | 🇺🇸 United States | |
| 6 | San Antonio | 🇺🇸 United States | |
| 7 | Houston | 🇺🇸 United States | |
| 8 | San Francisco | 🇺🇸 United States | |
| 9 | San Luis Potosí | 🇲🇽 México | |
| 10 | Dallas | 🇺🇸 United States |
Possible
About 20% of wildlife watchers report a Horse-Fly Carpenter Bee sighting in Reserva de la Biosfera Mariposa Monarca on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 9th most-seen of the 21 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
November
In that month about 40% of wildlife watchers report a Horse-Fly Carpenter Bee in Reserva de la Biosfera Mariposa Monarca on a given day, against under 5% in April–August and October, the lowest months. That is one of Reserva de la Biosfera Mariposa Monarca's driest months, with about 40 mm of rain against 270 mm in July.
Between 5 and 8 pm
Across all the parks we cover, that three-hour window holds the most Horse-Fly Carpenter Bee sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 5 parks where we can rate Horse-Fly Carpenter Bee sightings, Reserva de la Biosfera Mariposa Monarca has the highest daily chance: about 20%. Next come Zion National Park (United States, about 10%) and Sequoia and Kings Canyon National Parks (United States, about 10%).
Same family: Apidae
The closest relatives of the Horse-Fly Carpenter Bee that you can see in Reserva de la Biosfera Mariposa Monarca (family Apidae, Honey Bees, Bumble Bees, and Allies) are Mesoamerican Bumble Bee (about 50%) and Hunt's Bumble Bee (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Horse-Fly Carpenter Bee is recorded against all the insects logged in Reserva de la Biosfera Mariposa Monarca (8 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.
