Asthena albulata
In 3 days ~10% in a week ~20%
Asthena albulata, the small white wave, is a moth of the family Geometridae. It is known from all of Europe and is also present in the Near East. The wingspan is 14–18 mm. The ground colour of the wings is white (silky in appearance). There are fine brown cross-lines across both forewings and hindwings and a row of black dots along the margin of both wings. Asthena amurensis Stgr., from the Eastern Palearctic, is smaller, with distinct discal dots but wanting those of the distal margin.
The larva is slender, pale with large red spots, with quite long, dark setae. There are two generations per year with adults on wing from mid-April to August. The larvae feed on Corylus avellana, Betula and sometimes Carpinus betulus. Larvae can be found from May to September. It overwinters as a pupa. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 2 | Pyrénées National Park | 🇫🇷 France |
Rare
Under 5% of wildlife watchers report a Small White Wave sighting in Pyrénées National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 1026th most-seen of the 1277 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 August
In those months about 10% of wildlife watchers report a Small White Wave in Pyrénées National Park on a given day, against under 5% in July and September–May, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Small White Wave sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
2nd of 2
Of the 2 parks where we can rate Small White Wave sightings, Pyrénées National Park ranks 2nd at under 5%. The best odds are in Bavarian Forest National Park (Germany, about 10%).
Same family: Geometridae
The closest relatives of the Small White Wave that you can see in Pyrénées National Park (family Geometridae, Geometer Moths) are Latticed Heath (about 10%), Common Heath (about 10%) and Willow Beauty (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Small White Wave is recorded against all the insects logged in Pyrénées National Park (6 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.
