Cerapteryx graminis
In 3 days ~40% in a week ~70%
Cerapteryx graminis, the antler moth, is a moth of the family Noctuidae. It is a common species throughout most of Europe but is lacking in the very dry southern regions. The northernmost occurrence is Iceland, and above the Arctic Circle. It also occurs in Siberia and in North Mongolia. The species has been introduced to North America. In the Alps it rises to an altitude of 2100 meters.
This species is unusual for a noctuid in that there is marked sexual dimorphism. The male has a wingspan of 27–32 mm but the female is larger with a wingspan of 35–39 mm. The forewings are brown, speckled with black and marked with a bold white branched basal streak which gives the species its common name. The hindwings are dark brown with a white fringe.
Larvae feed on a variety of grasses. Forewing olive grey or olive rufous, or olive fuscous; median and marginal areas sometimes deeper coloured, otherwise the 3 lines are undefined; stigmata pale, especially the reniform, which at base is white, emitting a ray basewards along the median vein, and two externally along veins 3 and 4; claviform elongate; orbicular flattened; hindwing dark fuscous... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cairngorms National Park | 🇬🇧 United Kingdom | |
| 2 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 3 | Tatra National Park | 🇸🇰 Slovakia | |
| 4 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 5 | Wadden Sea National Park | 🇩🇪 Germany | |
| 6 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Helsinki | 🇫🇮 Finland | |
| 2 | Manchester | 🇬🇧 United Kingdom | |
| 3 | Stockholm | 🇸🇪 Sweden | |
| 4 | Liverpool | 🇬🇧 United Kingdom | |
| 5 | Birmingham | 🇬🇧 United Kingdom |
Possible
About 20% of wildlife watchers report an Antler Moth sighting in Snowdonia National Park on a given day, based on 28 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 65th most-seen of the 387 insects we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
August
In that month about 40% of wildlife watchers report an Antler Moth in Snowdonia National Park on a given day, against under 5% in October to June, the lowest months.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Antler Moth sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 6 parks where we can rate Antler Moth sightings, Snowdonia National Park ranks 2nd at about 20%, level with the leaders once rounded. The best odds are in Cairngorms National Park (United Kingdom, about 20%).
Same family: Noctuidae
The closest relatives of the Antler Moth that you can see in Snowdonia National Park (family Noctuidae, Cutworm Moths and Allies) are Large Yellow Underwing (about 30%), Dark Arches (about 30%) and Flame Shoulder Moth (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Antler Moth is recorded against all the insects logged in Snowdonia National Park (28 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.
