Horisme vitalbata
In 3 days ~10% in a week ~30%
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 |
Rare
Under 5% of wildlife watchers report a Small Waved Umber sighting in Pyrénées National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 806th 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 30%, if each day is a fresh chance.
April to June
In those months about 10% of wildlife watchers report a Small Waved Umber in Pyrénées National Park on a given day, against under 5% in July 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.
2nd of 2
Of the 2 parks where we can rate Small Waved Umber sightings, Pyrénées National Park ranks 2nd at under 5%. The best odds are in Cévennes National Park (France, about 10%).
Same family: Geometridae
The closest relatives of the Small Waved Umber 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 Waved Umber is recorded against all the insects logged in Pyrénées National Park (10 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.
