Idaea laevigata
In 3 days ~10% in a week ~20%
Idaea laevigata, the strange wave, is a moth of the family Geometridae. It is found in Central Europe and Southern Europe. It occurs in Britain as an imported species. The species has a wingspan c. 20 mm (0.79 in). The adults fly in two generations in June and July and again in September.
The larvae feed on dry plant material. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Strange Wave sighting in Madrid on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 328th most-seen of the 457 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.
May and June
In those months about 10% of wildlife watchers report a Strange Wave in Madrid on a given day, against under 5% in July to April, the lowest months.
2nd of 3
Of the 3 cities where we can rate Strange Wave sightings, Madrid ranks 2nd at under 5%. The best odds are in Valencia (Spain, about 10%).
Same genus: Idaea
The closest relatives of the Strange Wave that you can see in Madrid (genus Idaea) are Least Carpet (about 10%) and Bright Wave (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Strange Wave is recorded against all the insects logged in Madrid (8 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.
