Acleris cristana
In 3 days ~10% in a week ~20%
Acleris cristana, the rufous-margined button moth, is a moth of the family Tortricidae and is found from Europe through the Caucasus and Ussuri to Japan. The wingspan is 18–22 mm. Thorax with strong longitudinal crest. Forewings reddish-ochreous to dark brown,
sometimes bicolorous; a very large sometimes white scale-tuft in middle of disc; sometimes a white or pale ochreous dorsal streak, or an orange central longitudinal streak; sometimes two fascia-like whitish streaks from costa converging to middle of
disc. The hindwings grey, apex darker. It shows a wide variation in appearance and has 137 named forms as well as numerous synonyms. Forms look different but are the same species and can breed together. Julius von Kennel provides a full description.
Adults are on wing from August to November and again from March to May after hibernation. The larvae feed between spun leaves on various rosaceous trees and bushes, including Prunus spinosa and Crataegus species (e.g. Crataegus maximowiczi). Other recorded food plants include Carpinus betulus, Ulmus campestris, Rosa, Malus species (including Malus pumila), Salix caprea, Sorbus sambucifolia, Cerasus sachalinensis, Prunus salicina and Zelkova serrata. 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 Tufted Button sighting in Prague on a given day, based on 5 verified sightings from GBIF citizen-science data. It is the 647th most-seen of the 724 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.
February and March
In those months about 10% of wildlife watchers report a Tufted Button in Prague on a given day, against under 5% in April to January, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Tufted Button sightings with a recorded time, and about 6 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 2 cities where we can rate Tufted Button sightings, Prague ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in London (United Kingdom, under 5%).
GBIF citizen-science records
It is estimated from how often the Tufted Button is recorded against all the insects logged in Prague (5 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.
