Idaea sylvestraria
In 3 days ~20% in a week ~30%
Idaea sylvestraria, the dotted border wave, is a moth of the family Geometridae. The species was first described by Jacob Hübner in 1799. It is found in Europe. The species has a wingspan of 20–23 mm. The adults fly in July and August.[1]
The larvae feed on low plants such as dandelion, knotgrass, heather, bramble, and wild thyme. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Wadden Sea National Park | 🇩🇪 Germany |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Berlin | 🇩🇪 Germany |
With luck
About 10% of wildlife watchers report a Dotted Border Wave sighting in Wadden Sea National Park on a given day, based on 31 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 261st most-seen of the 818 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 30%, if each day is a fresh chance.
July and August
In those months about 10% of wildlife watchers report a Dotted Border Wave in Wadden Sea National Park on a given day, against under 5% in September to June, the lowest months.
Between 11 pm and 2 am
Across all the parks we cover, that three-hour window holds the most Dotted Border Wave sightings with a recorded time, and nearly all 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 Dotted Border Wave sightings: about 10% of wildlife watchers there report one on a given day.
Same genus: Idaea
The closest relatives of the Dotted Border Wave that you can see in Wadden Sea National Park (genus Idaea) are Riband Wave (about 10%), Single-Dotted Wave (about 10%) and Small Scallop (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Dotted Border Wave is recorded against all the insects logged in Wadden Sea National Park (31 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.
