Eremnophila aureonotata
In 3 days ~20% in a week ~50%
Eremnophila aureonotata, also known as the gold-marked thread-waisted wasp, is a species in the family Sphecidae ("thread-waisted wasps") found in North and South America. Their coloration is black with 2 pairs gold patches of setae one on the side of their thorax and one on the propodeum. Adults drink nectar while larvae feed on caterpillars. Females dig vertical burrows in sand or hard-packed loam to lay eggs in and provision the nests with a single caterpillar. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Acadia National Park | 🇺🇸 United States | |
| 2 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 3 | Shenandoah National Park | 🇺🇸 United States | |
| 4 | Cumbres de Monterrey National Park | 🇲🇽 Mexico |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Boston | 🇺🇸 United States | |
| 2 | Washington | 🇺🇸 United States | |
| 3 | Baltimore | 🇺🇸 United States | |
| 4 | New York City | 🇺🇸 United States | |
| 5 | Toronto | 🇨🇦 Canada | |
| 6 | Houston | 🇺🇸 United States | |
| 7 | Philadelphia | 🇺🇸 United States | |
| 8 | Dallas | 🇺🇸 United States | |
| 9 | Chicago | 🇺🇸 United States | |
| 10 | Minneapolis [Saint Paul] | 🇺🇸 United States |
With luck
About 10% of wildlife watchers report a Gold-Marked Thread-Waisted Wasp sighting in Boston on a given day, based on 146 verified sightings from GBIF citizen-science data. It is the 113th most-seen of the 1200 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 50%, if each day is a fresh chance.
August
In that month about 20% of wildlife watchers report a Gold-Marked Thread-Waisted Wasp in Boston on a given day, against under 5% in November to June, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Gold-Marked Thread-Waisted Wasp sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 12 cities where we can rate Gold-Marked Thread-Waisted Wasp sightings, Boston has the highest daily chance: about 10%. Next come Washington (United States, about 10%) and Baltimore (United States, about 10%).
Same family: Sphecidae
The closest relatives of the Gold-Marked Thread-Waisted Wasp that you can see in Boston (family Sphecidae, Thread-waisted Wasps) are Great Black Digger Wasp (about 10%), Great Golden Digger Wasp (about 10%) and Yellow-Legged Mud-Dauber Wasp (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Gold-Marked Thread-Waisted Wasp is recorded against all the insects logged in Boston (146 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.
