Horisme vitalbata
In 3 days ~20% in a week ~40%
Horisme vitalbata, the small waved umber, is a moth of the family Geometridae. The species was first described by Michael Denis and Ignaz Schiffermüller in 1775. It occurs in Europe. The wingspan is 30–35 mm. The length of the forewings is 15–17 mm. The moths fly in two generations from May to June and again in August.[1]
The larvae feed on Clematis vitalba. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cévennes National Park | 🇫🇷 France | |
| 2 | Pyrénées National Park | 🇫🇷 France |
With luck
About 10% of wildlife watchers report a Small Waved Umber sighting in Cévennes National Park on a given day, based on 21 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 401st most-seen of the 996 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
April to September
In those months about 10% of wildlife watchers report a Small Waved Umber in Cévennes National Park on a given day, against under 5% in October to March, the lowest months.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Small Waved Umber sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is most active around dawn and dusk.
Yes
Of the 2 parks where we can rate Small Waved Umber sightings, Cévennes National Park has the highest daily chance: about 10%. Next come Pyrénées National Park (France, under 5%).
GBIF citizen-science records
It is estimated from how often the Small Waved Umber is recorded against all the insects logged in Cévennes National Park (21 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.
