Megachile campanulae
In 3 days ~10% in a week ~30%
Megachile campanulae, known as the bellflower resin bee, is a species of bee in the family Megachilidae. Described in 1903, these solitary bees are native to eastern North America. Studies in 2013 placed them among the first insect species to use synthetic materials for making nests. They are considered mason bees, which is a common descriptor of bees in several families, including Megachilidae. Within the genus Megachile, frequently also referred to as leafcutter bees, M. campanulae is a member of the subgenus Chelostomoides, which do not construct nests from cut leaves, but rather from plant resins and other materials. Females lay eggs in nests constructed with individual cell compartments for each egg. Once hatched, the eggs progress through larval stages and subsequently will overwinter as pupae. The bees are susceptible to parasitism from several other bee species, which act as brood parasites. They are medium-sized bees and the female adults are typically larger than the males. They are important pollinators of numerous native plant species throughout their range.
Megachile campanulae was originally described in 1903 under the name Oligotropus... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Minneapolis [Saint Paul] | 🇺🇸 United States | |
| 2 | Toronto | 🇨🇦 Canada | |
| 3 | Boston | 🇺🇸 United States | |
| 4 | Chicago | 🇺🇸 United States | |
| 5 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Bellflower Resin Bee sighting in Minneapolis [Saint Paul] on a given day, based on 31 verified sightings from GBIF citizen-science data. It is the 212th most-seen of the 672 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
June and July
In those months about 10% of wildlife watchers report a Bellflower Resin Bee in Minneapolis [Saint Paul] on a given day, against under 5% in August to May, the lowest months. Those are among Minneapolis [Saint Paul]'s wettest months, with about 110 mm of rain a month against 20 mm in January.
Yes
Of the 5 cities where we can rate Bellflower Resin Bee sightings, Minneapolis [Saint Paul] has the highest daily chance: under 5%. Next come Toronto (Canada, under 5%) and Boston (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Bellflower Resin Bee is recorded against all the insects logged in Minneapolis [Saint Paul] (31 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.
