Bactra lancealana
In 3 days ~10% in a week ~30%
Bactra lancealana is a moth of the family Tortricidae found in Europe. The moth has a wingspan of 11–20 mm. The forewings are pale ochreous or ochreous- brownish, costa strigulated with darker ochreous or dark fuscous; a spot in disc at 1/3 and an angular mark beyond middle dark fuscous, often obsolete, sometimes forming a more or less complete dark median streak from base to apex; central fascia sometimes indicated on costa. Hindwings are grey. The larva is greenish or whitish-fleshcolour; head and plate of 2 black. It is very similar to Bactra furfurana.
The moth flies from May to October.[1] Bactra lancealana larvae mainly feed on various rushes, including Juncus and Scirpus. 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 Black-Blotched Bactra Moth sighting in Bavarian Forest National Park on a given day, based on 5 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 964th 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.
June and August
In those months about 10% of wildlife watchers report a Black-Blotched Bactra Moth in Bavarian Forest National Park on a given day, against under 5% in July and September–May, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Black-Blotched Bactra Moth 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.
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 Black-Blotched Bactra Moth sightings: under 5% of wildlife watchers there report one on a given day.
Same family: Tortricidae
The closest relatives of the Black-Blotched Bactra Moth that you can see in Bavarian Forest National Park (family Tortricidae, Tortricid Leafroller Moths) are Common Marble (about 10%), Arched Marble (about 10%) and Barred Fruit-Tree Tortrix (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Black-Blotched Bactra Moth is recorded against all the insects logged in Bavarian Forest National Park (5 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.
