Xylocopa caerulea
In 3 days ~10% in a week ~20%
Xylocopa caerulea, or the blue carpenter bee, is a species of carpenter bee. Xylocopa caerulea is a relatively large species, reaching an average size of 23 mm (0.91 in). The species is sexually dimorphic, with the thoraces of the females having striking blue color and the males' thoraces looking more brownish green. The sides of the abdomen and first abdominal segments are also covered by a similar, albeit finer and thinner, coat of blue hairs. The reflectance spectrum of the thorax of a female Xylocopa caerulea has a broad band in the blue wavelength range, with a trough around 600 nm, indicating the presence of a pigment that strongly reduces reflection in the red wavelength range.
This species is widely distributed in Southeast Asia, India and Southern China. Xylocopa caerulea will burrow into trees to make their nests. They usually are solitary, but sometimes multiple bees will share a common entry hole. They create honey which is mixed with pollen to create ambrosia or bee bread. This species will place the bee bread in a wooden chamber which they then lay their eggs on top of. The bee bread serves as a food source for their... Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Blue Carpenter Bee sighting in Singapore on a given day, based on 40 verified sightings from GBIF citizen-science data. It is the 428th most-seen of the 1045 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
June and December
In those months about 10% of wildlife watchers report a Blue Carpenter Bee in Singapore on a given day, against under 5% in January–May and July–November, the lowest months.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Blue Carpenter Bee sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
2nd of 2
Of the 2 cities where we can rate Blue Carpenter Bee sightings, Singapore ranks 2nd at under 5%. The best odds are in Jakarta (Indonesia, about 10%).
Same genus: Xylocopa
The closest relatives of the Blue Carpenter Bee that you can see in Singapore (genus Xylocopa, Large Carpenter Bees) are Broad-Handed Carpenter Bee (about 20%) and White-Cheeked Carpenter (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Blue Carpenter Bee is recorded against all the insects logged in Singapore (40 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.
