Gluphisia crenata
In 3 days ~10% in a week ~30%
Gluphisia crenata, the dusky marbled brown, is a moth of the family Notodontidae. The species was first described by Eugenius Johann Christoph Esper in 1785. It is found in Europe, east over parts of Russia and China up to Japan. It is also found in North America, where it was traditionally treated as a separate species, Gluphisia septentrionis.
The wingspan is 28–34 mm. The moth flies from April to August in two generations depending on the location. The larvae feed on Populus species, such as P. nigra, P. balsamifera and P. tremula, but also on Salix purpurea.
Gluphisia crenata exhibit a puddling behavior, sucking up fluid from puddles, pumping it through the digestive tract, and excreting it at 3 second intervals. Gluphisia crenata crenata Gluphisia crenosa crenosa (Hubner, 1796)
Retrieved July 31, 2019. Taxonomy Fauna Europaea Lepiforum... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Pyrénées National Park | 🇫🇷 France | |
| 2 | Wadden Sea National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Paris | 🇫🇷 France |
Rare
Under 5% of wildlife watchers report a Dusky Marbled Brown sighting in Pyrénées National Park on a given day, based on 11 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 738th most-seen of the 1277 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.
April to June
In those months about 10% of wildlife watchers report a Dusky Marbled Brown in Pyrénées National Park on a given day, against under 5% in July to March, the lowest months.
Between 11 pm and 2 am
Across all the parks we cover, that three-hour window holds the most Dusky Marbled Brown sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Yes
Of the 2 parks where we can rate Dusky Marbled Brown sightings, Pyrénées National Park has the highest daily chance: under 5%. Next come Wadden Sea National Park (Germany, under 5%).
Same family: Notodontidae
The closest relatives of the Dusky Marbled Brown that you can see in Pyrénées National Park (family Notodontidae, Prominent Moths) are Pine Processionary-Moth (about 10%), Lobster Moth (about 10%) and Buff-Tip (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Dusky Marbled Brown is recorded against all the insects logged in Pyrénées National Park (11 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.
