Manduca jasminearum
In 3 days ~10% in a week ~30%
Manduca jasminearum, the ash sphinx, is a member of the moth family Sphingidae. It ranges from east of the Mississippi River to the Atlantic Ocean, being common in the northeast United States. It has a wingspan of 84–105 mm. Adults have two generations per year, flying from May to September. They feed on nectar from flowers.
The larvae primarily feed on ash species (Fraxinus), but have also been observed consuming Syringa and Ulmus species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report an Ash Sphinx sighting in Shenandoah National Park on a given day, based on 7 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 447th most-seen of the 723 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.
July
In that month about 10% of wildlife watchers report an Ash Sphinx in Shenandoah National Park on a given day, against under 5% in August to June, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Ash Sphinx sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Only Shenandoah National Park, in our data
Shenandoah National Park is the only park on Wallace's Line with enough records to rate Ash Sphinx sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Ash Sphinx is recorded against all the insects logged in Shenandoah National Park (7 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.
