Prionoxystus robiniae
In 3 days ~10% in a week ~20%
Prionoxystus robiniae, the carpenterworm moth or locust borer, is a moth of the family Cossidae. It was first described by Peck in 1818 and it is found in southern Canada and most of the United States. The wingspan is 43–85 mm (1.7–3.3 in). Adults are on wing from May to July depending on the location.
The larvae feed on locust, oak, chestnut, poplar, willow, maple and ash. The species is considered a pest, because the tunnels the larvae create decrease the value of hardwood lumber. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Big Cypress National Preserve | 🇺🇸 United States | |
| 2 | Everglades National Park | 🇺🇸 United States | |
| 3 | Great Smoky Mountains National Park | 🇺🇸 United States | |
| 4 | Shenandoah National Park | 🇺🇸 United States | |
| 5 | Cumbres de Monterrey National Park | 🇲🇽 Mexico |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Austin | 🇺🇸 United States | |
| 2 | Dallas | 🇺🇸 United States | |
| 3 | Sacramento | 🇺🇸 United States | |
| 4 | Washington | 🇺🇸 United States | |
| 5 | Chicago | 🇺🇸 United States | |
| 6 | Montreal | 🇨🇦 Canada | |
| 7 | Houston | 🇺🇸 United States | |
| 8 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Carpenterworm Moth sighting in Washington on a given day, based on 16 verified sightings from GBIF citizen-science data. It is the 990th most-seen of the 1807 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Carpenterworm Moth in Washington on a given day, so our monthly data shows no clear season.
Between 7 and 10 pm
Across all the parks we cover, that three-hour window holds the most Carpenterworm Moth sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
4th of 8
Of the 8 cities where we can rate Carpenterworm Moth sightings, Washington ranks 4th at under 5%. The best odds are in Austin (United States, about 10%), Dallas (United States, about 10%) and Sacramento (United States, under 5%).
GBIF citizen-science records
It is estimated from how often the Carpenterworm Moth is recorded against all the insects logged in Washington (16 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.
