Arenostola phragmitidis
In 3 days ~10% in a week ~30%
Arenostola phragmitidis, the fen wainscot, is a moth of the family Noctuidae. The species was first described by Jacob Hübner in 1803. It is found in most of Europe (except Ireland, Iceland, the Iberian Peninsula and the western part of the Balkan Peninsula), western Siberia, Turkey, Iraq, Afghanistan, Central Asia and China. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Wadden Sea National Park | 🇩🇪 Germany |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Fen Wainscot sighting in Wadden Sea National Park on a given day, based on 16 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 361st most-seen of the 818 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 a Fen Wainscot in Wadden Sea National Park on a given day, against under 5% in August to June, the lowest months.
Between 11 pm and 2 am
Across all the parks we cover, that three-hour window holds the most Fen Wainscot 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.
Only Wadden Sea National Park, in our data
Wadden Sea National Park is the only park on Wallace's Line with enough records to rate Fen Wainscot sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Noctuidae
The closest relatives of the Fen Wainscot that you can see in Wadden Sea National Park (family Noctuidae, Cutworm Moths and Allies) are Large Yellow Underwing (about 20%), Silver Υ (about 20%) and Flame Shoulder Moth (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Fen Wainscot is recorded against all the insects logged in Wadden Sea National Park (16 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.
