Pandemis heparana
In 3 days ~10% in a week ~30%
Pandemis heparana, the dark fruit-tree tortrix or apple brown tortrix, is a moth of the family Tortricidae. This species can be found in most of Europe, in the eastern Palearctic realm, in the Near East, and in North America.
Pandemis heparana has a wingspan of 16–24 mm. In these moths the basic color of the forewings ranges from yellowish brown to reddish brown, with a reticulate pattern, a dark brown basal fascia, dark brown transversal bands, two triangular spots and brown fringes at the edge. The hindwings are gray-brown with white-yellow fringes. The larva can reach 22 mm and it is pale green.
This species is rather similar to Pandemis cerasana. These moths have two generations per year (bivoltine). The moth flies from late May to mid-September in western Europe. The larvae are considered a pest of trees and shrubs. They live in a rolled leaf and are polyphagous, feeding on various deciduous trees and shrubs including oak, willow, birch, honeysuckle, sorbus, apple and pear. Pupation takes places in the rolled leaves.
Data related to Pandemis heparana at Wikispecies Media related... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Wadden Sea National Park | 🇩🇪 Germany | |
| 2 | Bavarian Forest National Park | 🇩🇪 Germany | |
| 3 | Pyrénées National Park | 🇫🇷 France |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Nizhny Novgorod | 🇷🇺 Russia | |
| 2 | Kyiv | 🇺🇦 Ukraine | |
| 3 | Berlin | 🇩🇪 Germany | |
| 4 | Moscow | 🇷🇺 Russia | |
| 5 | London | 🇬🇧 United Kingdom |
Rare
Under 5% of wildlife watchers report a Dark Fruit-Tree Tortrix sighting in Nizhny Novgorod on a given day, based on 12 verified sightings from GBIF citizen-science data. It is the 193rd most-seen of the 405 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–July and September
In those months about 10% of wildlife watchers report a Dark Fruit-Tree Tortrix in Nizhny Novgorod on a given day, against under 5% in August and October–May, the lowest months.
Between 11 pm and 2 am
Across all the parks we cover, that three-hour window holds the most Dark Fruit-Tree Tortrix sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Yes
Of the 5 cities where we can rate Dark Fruit-Tree Tortrix sightings, Nizhny Novgorod has the highest daily chance: under 5%. Next come Kyiv (Ukraine, under 5%) and Berlin (Germany, under 5%).
GBIF citizen-science records
It is estimated from how often the Dark Fruit-Tree Tortrix is recorded against all the insects logged in Nizhny Novgorod (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.
