Argyresthia spinosella
In 3 days ~10% in a week ~20%
Argyresthia spinosella is a moth of the family Yponomeutidae. It is found in Europe and Anatolia. The wingspan is 9–11 mm. The head is white. Forewings are fuscous, with purple reflections, base ochreous; a thick white dorsal streak to tornus; a darker fuscous median fascia, interrupted in disc, edged with whitish on costa; some whitish costal strigulae posteriorly. Hindwings are grey.
The moth flies from May to July. [1]. The larvae feed on Prunus spinosa. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Blackthorn Argent sighting in London on a given day, based on 12 verified sightings from GBIF citizen-science data. It is the 971st most-seen of the 1504 insects we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
June
In that month about 10% of wildlife watchers report a Blackthorn Argent in London on a given day, against under 5% in July to May, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Blackthorn Argent sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Among the best
Of the 3 cities where we can rate Blackthorn Argent sightings, London ranks 3rd at under 5%, level with the leaders once rounded. The best odds are in Vienna (Austria, under 5%) and Berlin (Germany, under 5%).
GBIF citizen-science records
It is estimated from how often the Blackthorn Argent is recorded against all the insects logged in London (12 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.
