Drymonia dodonaea
In 3 days ~30% in a week ~50%
Drymonia dodonaea, the marbled brown, is a moth of the family Notodontidae. The species was first described by Michael Denis and Ignaz Schiffermüller in 1775. It is found in Europe and in the area surrounding the Caucasus.
The wingspan is 33–38 mm. Similar to Drymonia ruficornis, but the forewings are generally whiter; the crosslines are less straight, and there is no black crescent above the centre of the wings. The larva is naked and without any conspicuous outgrowths. It is yellow-green on the dorsum, has a red-edged yellow lateral stripe and it is bluish-green under this stripe.
Forewing whitish grey, with 2 black basal dots, a broad transverse band which is constricted in the middle and proximally edged with blackish scaling, and a distal dark dentate band which is broad at the costal margin, tapers to the hind margin and forms an intensely black-brown angle-mark on vein 2; distal margin with sharp dark brown spots. Hindwing grey brown. The scheme of markings of the forewing somewhat recalls Cerura. ab. albida Rebel belongs to trimacula [synonym]; the whole median area of the forewing is uniformly white apart from the two bands. — In... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 2 | Cévennes National Park | 🇫🇷 France | |
| 3 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 4 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Prague | 🇨🇿 Czechia |
With luck
About 10% of wildlife watchers report a Marbled Brown sighting in Snowdonia National Park on a given day, based on 13 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 168th most-seen of the 387 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
May
In that month about 30% of wildlife watchers report a Marbled Brown in Snowdonia National Park on a given day, against under 5% in July to March, the lowest months.
Between 10 pm and 1 am
Across all the parks we cover, that three-hour window holds the most Marbled Brown sightings with a recorded time, and about half of them come between 6 pm and 6 am: it is seen both by day and at night.
Yes
Of the 4 parks where we can rate Marbled Brown sightings, Snowdonia National Park has the highest daily chance: about 10%. Next come Cévennes National Park (France, about 10%) and Bavarian Forest National Park (Germany, about 10%).
GBIF citizen-science records
It is estimated from how often the Marbled Brown is recorded against all the insects logged in Snowdonia National Park (13 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.
