Crambus perlellus
In 3 days ~20% in a week ~40%
Crambus perlella is a species of moth of the family Crambidae. It is found in Europe and east across the Palearctic. The wingspan is 19–28 mm. The face is rather prominent. Forewings very shining whitish, often ochreous-tinged; veins and dorsal area often more or less broadly suffused with dark grey; cilia shining white. Hindwings are grey, sometimes much suffused with ochreous-whitish, sometimes posteriorly dark grey. The larva is light grey-greenish or greyish-ochreous; dorsal line darker; spots brown; head pale yellow-brown, darker-marked. See also Parsons et al.
The moth flies from July to August depending on the location. The larvae feed on various grasses. Adults feed on the nectar of Leucanthemum species. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 2 | Snowdonia National Park | 🇬🇧 United Kingdom | |
| 3 | Wadden Sea National Park | 🇩🇪 Germany |
With luck
About 10% of wildlife watchers report a Yellow Satin Veneer sighting in Helsinki on a given day, based on 32 verified sightings from GBIF citizen-science data. It is the 181st most-seen of the 838 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.
July
In that month about 20% of wildlife watchers report a Yellow Satin Veneer in Helsinki on a given day, against under 5% in August to June, the lowest months.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Yellow Satin Veneer sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is seen both by day and at night.
Yes
Of the 8 cities where we can rate Yellow Satin Veneer sightings, Helsinki has the highest daily chance: about 10%. Next come London (United Kingdom, about 10%) and Rotterdam [The Hague] (Netherlands, about 10%).
GBIF citizen-science records
It is estimated from how often the Yellow Satin Veneer is recorded against all the insects logged in Helsinki (32 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.
