Odontopera bidentata
In 3 days ~10% in a week ~30%
The scalloped hazel (Odontopera bidentata) is a moth of the family Geometridae. The species was first described by Carl Alexander Clerck in 1759. It is a common species of northern and central Europe including the British Isles and Russia to the Urals. It is also widespread through Siberia and the Amur-Ussuri region to the Kuril Islands and Japan.
The wingspan is 46–50 mm. The forewing ground colour is usually grey brown. The same coloured midfield is bordered by blackish crossbars that are often partly white. At the wing edge below the apex are two characteristic, protruding teeth. The scientific name of the species is derived from the Latin language bi = "twice" and dentatus = "toothed". The outer dark crossline of the forewings continues on the hindwings. All wings have a ring-shaped dark discal spots. The thorax is hairy. This is a very variable species with the wing colour ranging from whitish through buff and brown to black, sometimes with variegation, but it is always easily identifiable by the white discal spot on each wing and the characteristic "ragged" margin of the wings. Last instar caterpillars have a brownish colouration. However,... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 2 | Cairngorms National Park | 🇬🇧 United Kingdom | |
| 3 | Mercantour National Park | 🇫🇷 France | |
| 4 | Bavarian Forest National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | Birmingham | 🇬🇧 United Kingdom | |
| 3 | London | 🇬🇧 United Kingdom |
Rare
Under 5% of wildlife watchers report a Scalloped Hazel sighting in Liverpool on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 521st most-seen of the 632 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.
May and June
In those months about 10% of wildlife watchers report a Scalloped Hazel in Liverpool on a given day, against under 5% in July to April, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Scalloped Hazel sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 3 cities where we can rate Scalloped Hazel sightings, Liverpool has the highest daily chance: under 5%. Next come Birmingham (United Kingdom, under 5%) and London (United Kingdom, under 5%).
Same family: Geometridae
The closest relatives of the Scalloped Hazel that you can see in Liverpool (family Geometridae, Geometer Moths) are Willow Beauty (about 40%), Marbled Carpet Moth (about 30%) and Brimstone Moth (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Scalloped Hazel is recorded against all the insects logged in Liverpool (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.
