Megachile sculpturalis
In 3 days ~30% in a week ~50%
Megachile sculpturalis, known as the giant resin bee and sculptured resin bee, is a species of leafcutting bees belonging to the family Megachilidae. Native to Japan and China, it has been introduced to the Eastern United States and Ontario, Canada in recent times. First established in the United States during the early 1990s, records currently exist from most states east of the Mississippi River. In Europe, it was first observed close to Marseille's (France) port in 2008. Since then, this invasive species has also been recorded in the following European countries: Bosnia & Herzegovina, Germany, Hungary, Italy, Serbia, Slovenia, Spain, and Switzerland.
Megachile sculpturalis can reach a body length of about 19–22 mm (0.75–0.87 in) in males, while females usually are larger than males, reaching about 21–25 mm (0.83–0.98 in). It is much bigger than most other leafcutting bees. The body is cylindrical, jaws are large and wings are transparent, with a brown color that darkens toward the tips. Head and abdomen are mainly black, the abdomen is rather shiny and without hairs, while thorax is covered with dense yellowish-brown pubescence. In males the abdomen... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cévennes National Park | 🇫🇷 France | |
| 2 | Shenandoah National Park | 🇺🇸 United States | |
| 3 | Point Pelee National Park | 🇨🇦 Canada | |
| 4 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 5 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Budapest | 🇭🇺 Hungary | |
| 2 | Barcelona | 🇪🇸 Spain | |
| 3 | Boston | 🇺🇸 United States | |
| 4 | Philadelphia | 🇺🇸 United States | |
| 5 | Bucharest | 🇷🇴 Romania | |
| 6 | New York City | 🇺🇸 United States | |
| 7 | Milan | 🇮🇹 Italy | |
| 8 | Lyon | 🇫🇷 France | |
| 9 | Vienna | 🇦🇹 Austria | |
| 10 | Baltimore | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Sculptured Resin Bee sighting in Cévennes National Park on a given day, based on 24 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 275th most-seen of the 996 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
July
In that month about 20% of wildlife watchers report a Sculptured Resin Bee in Cévennes National Park on a given day, against under 5% in October to May, the lowest months. That is one of Cévennes National Park's driest months, with about 35 mm of rain against 260 mm in October.
Between 2 and 5 pm
Across all the parks we cover, that three-hour window holds the most Sculptured Resin 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 Sculptured Resin Bee sightings, Cévennes National Park has the highest daily chance: about 10%. Next come Shenandoah National Park (United States, about 10%) and Point Pelee National Park (Canada, about 10%).
Same family: Megachilidae
The closest relatives of the Sculptured Resin Bee that you can see in Cévennes National Park (family Megachilidae, Mason, Leafcutter, Carder, and Resin Bees) are Florentine Woolcarder Bee (about 10%), European Orchard Bee (about 10%) and Seven-Toothed Red Resin Bee (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Sculptured Resin Bee is recorded against all the insects logged in Cévennes 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.
