Archips xylosteana
In 3 days ~10% in a week ~30%
Archips xylosteana, the variegated golden tortrix or brown oak tortrix, is a moth of the family Tortricidae. This Palearctic moth is widespread in most of Europe, in Asia (China, Iran, Japan, Kazakhstan, Korea, Siberia, Turkey), and in northern Africa (Algeria).
This moth species inhabit woodland and scrub in hilly and mountainous areas. Archips xylosteana is a medium-sized to large moth with a wingspan reaching 14–23 millimetres (0.55–0.91 in). The females are usually slightly larger than the males. The basic color of the fore wings varies from yellow-brown or ocher to pinkish brown, mottled with dark reddish brown markings. Forewings are broad and roughly rectangular. Hind wings are light grayish brown. The design of the wings may appear lightly asymmetric, because at rest one of the wing covers the other and hides part of it. The caterpillar varies from whitish gray to bluish with greenish reflections and have a black head. Meyrick describes it - Forewings with termen sinuate, vertical, costal fold from base to 3/5, irregular; ochreous more or less fuscous-tinged, paler towards costa; a transverse dorsal spot near base, central... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Sierra de Guadarrama National Park | 🇪🇸 Spain |
More parks will be added in future updates.
Rare
Under 5% of wildlife watchers report a Variegated Golden Tortrix sighting in Sierra de Guadarrama National Park on a given day, based on 10 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 325th most-seen of the 597 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.
June and July
In those months about 10% of wildlife watchers report a Variegated Golden Tortrix in Sierra de Guadarrama National Park on a given day, against under 5% in August to May, the lowest months. Those are among Sierra de Guadarrama National Park's driest months, with about 45 mm of rain a month against 110 mm in November.
Between 6 and 9 am
Across all the parks we cover, that three-hour window holds the most Variegated Golden Tortrix 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.
Only Sierra de Guadarrama National Park, in our data
Sierra de Guadarrama National Park is the only park on Wallace's Line with enough records to rate Variegated Golden Tortrix sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Variegated Golden Tortrix is recorded against all the insects logged in Sierra de Guadarrama National Park (10 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.
