Acrocercops brongniardella
In 3 days ~10% in a week ~30%
The leaf blotch miner moth (Acrocercops brongniardella) is a moth of the family Gracillariidae. It is found in Europe, including Turkey. The wingspan is 8–10 mm. The moth has light to dark brown forewings with a pure white pattern of oblique bars edged with black. The cilia are grey. The head is brownish. The antennae are longer than forewing length. The hindwings are brownish-grey. Meyrick describes it " O. brongniardellum, F. 8-10 mm. Posterior tibiae bristly above. Forewings fuscous, sprinkled with yellow-whitish; four slender oblique white fasciae, edged with black, more strongly anteriorly, last three interrupted near dorsum; a black projecting hook in apical cilia. Hindwings dark grey. Larva pale whitish-green; dorsal line darker; head pale brown: in blotches in leaves of oak; 6,7. "
The adults sit with their front legs stretched out to hold the head and thorax slanted up. The moths can be found in any month, probably in one extended brood. The larvae feed on Quercus species including holm oak (Quercus ilex), feeding gregariously in the upper epidermis making conspicuous white blotches.
Lepiforum.de UK Moths Media related to... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Stockholm | 🇸🇪 Sweden | |
| 2 | Liverpool | 🇬🇧 United Kingdom | |
| 3 | Helsinki | 🇫🇮 Finland | |
| 4 | Birmingham | 🇬🇧 United Kingdom | |
| 5 | London | 🇬🇧 United Kingdom |
Rare
Under 5% of wildlife watchers report a Brown Oak Slender sighting in Bavarian Forest National Park on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 822nd most-seen of the 1115 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.
May to August
In those months about 10% of wildlife watchers report a Brown Oak Slender in Bavarian Forest National Park on a given day, against under 5% in September to April, the lowest months.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Brown Oak Slender sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is seen both by day and at night.
Only Bavarian Forest National Park, in our data
Bavarian Forest National Park is the only park on Wallace's Line with enough records to rate Brown Oak Slender sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Gracillariidae
The closest relatives of the Brown Oak Slender that you can see in Bavarian Forest National Park (family Gracillariidae, Leaf Blotch Miner Moths) are Horse-Chestnut Leafminer (about 10%), Locust Digitate Leafminer Moth (about 10%) and Lime Leafminer (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Brown Oak Slender is recorded against all the insects logged in Bavarian Forest National Park (6 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.
