Chrysoteuchia culmella
In 3 days ~30% in a week ~50%
Chrysoteuchia culmella, the garden grass-veneer, is a species of moth of the family Crambidae. It was first described by Carl Linnaeus in his 1758 10th edition of Systema Naturae. It is found in Europe. The wingspan is 18–24 mm.
The forewings are brown; a whitish median streak, ending in branches along veins 2-5, often separated by dark fuscous scales; dorsal 2/3 often wholly suffused with whitish-ochreous; a terminal series of black dots; cilia metallic. Hindwings are rather dark grey. The larva is pale pinkish-ochreous; spots brown; head and plate of 2 brown, darker- marked. See also Parsons et al.
The moth flies from June to July depending on the location. The larvae feed on various grasses. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 2 | Wadden Sea National Park | 🇩🇪 Germany | |
| 3 | Tatra National Park | 🇸🇰 Slovakia | |
| 4 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 5 | Mercantour National Park | 🇫🇷 France | |
| 6 | Cairngorms National Park | 🇬🇧 United Kingdom | |
| 7 | Pyrénées National Park | 🇫🇷 France | |
| 8 | Cévennes National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Liverpool | 🇬🇧 United Kingdom | |
| 2 | London | 🇬🇧 United Kingdom | |
| 3 | Birmingham | 🇬🇧 United Kingdom | |
| 4 | Manchester | 🇬🇧 United Kingdom | |
| 5 | Helsinki | 🇫🇮 Finland | |
| 6 | Kharkiv | 🇺🇦 Ukraine | |
| 7 | Warsaw | 🇵🇱 Poland | |
| 8 | Essen | 🇩🇪 Germany | |
| 9 | Rotterdam [The Hague] | 🇳🇱 Netherlands | |
| 10 | Novosibirsk | 🇷🇺 Russia |
With luck
About 10% of wildlife watchers report a Garden Grass-Veneer sighting in Snowdonia National Park on a given day, based on 12 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 202nd most-seen of the 387 insects we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
June and November
In those months about 20% of wildlife watchers report a Garden Grass-Veneer in Snowdonia National Park on a given day, against under 5% in August–October and December–May, the lowest months.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Garden Grass-Veneer sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Among the best
Of the 8 parks where we can rate Garden Grass-Veneer sightings, Snowdonia National Park ranks 4th at about 10%, level with the leaders once rounded. The best odds are in Bavarian Forest National Park (Germany, about 10%), Wadden Sea National Park (Germany, about 10%) and Tatra National Park (Slovakia, about 10%).
Same family: Crambidae
The closest relatives of the Garden Grass-Veneer that you can see in Snowdonia National Park (family Crambidae, Crambid Snout Moths) are Small Grey (about 10%), Barred Grass-Veneer (about 10%) and Small Magpie (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Garden Grass-Veneer is recorded against all the insects logged in Snowdonia National Park (12 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.
