Idaea inquinata
In 3 days ~10% in a week ~20%
Idaea inquinata, the rusty wave, is a moth of the family Geometridae. It is found in Europe. The species has a wingspan of 16–19 mm. The length of the forewings is 8–10 mm. The adults fly at night from June to July [1] in Britain. The species is a rare and introduced species in England and is believed to have come to this country with imported dried flowers and herbs. The foodplant is believed to be dried or withered plants because of this.
^The flight season refers to the British Isles. This may vary in other parts of the range. Wikipedia →
| # | Park | Country | Daily sighting probability |
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Rare
Under 5% of wildlife watchers report a Rusty Wave sighting in Vienna on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 1090th most-seen of the 1406 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Rusty Wave in Vienna on a given day, so our monthly data shows no clear season.
Among the best
Of the 3 cities where we can rate Rusty Wave sightings, Vienna ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Kyiv (Ukraine, under 5%) and Melbourne (Australia, under 5%).
Same genus: Idaea
The closest relatives of the Rusty Wave that you can see in Vienna (genus Idaea) are Small Dusty Wave (about 10%), Least Carpet (about 10%) and Riband Wave (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Rusty Wave is recorded against all the insects logged in Vienna (7 verified sightings), 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.
