Pediasia aridella
In 3 days ~10% in a week ~20%
Pediasia aridella is a species of moth of the family Crambidae. It was described by Carl Peter Thunberg in 1788 and is found in Europe. There are three recognised subspecies. The wingspan is 20–26 mm. The forewings are ochreous, veins variably pale or whitish, interneural spaces sometimes blackish-sprinkled; a blackish streak beneath median vein from base to middle; lines obscurely darker, on lower half blackish mixed, median very strongly curved, very oblique dorsally, second curved, slightly indented below middle; three or four black dots on lower half of termen; cilia ochreous, mixed with white. Hindwings are whitish-grey or very pale grey. The larva is pale ochreous-grey; dorsal line darker; spots light brownish; head light or dark brown, darker-marked; plate of 2 sometimes dark brown.
The moth flies from June to September depending on the location. The larvae feed on various grasses. 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 Saltmarsh Grass-Veneer sighting in Wadden Sea National Park on a given day, based on 8 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 536th 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 20%, if each day is a fresh chance.
June and July
In those months about 10% of wildlife watchers report a Saltmarsh Grass-Veneer in Wadden Sea National Park on a given day, against under 5% in August to May, the lowest months.
Between 11 pm and 2 am
Across all the parks we cover, that three-hour window holds the most Saltmarsh Grass-Veneer 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 Saltmarsh Grass-Veneer sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Saltmarsh Grass-Veneer is recorded against all the insects logged in Wadden Sea National Park (8 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.
