Diasemia reticularis
In 3 days ~20% in a week ~40%
Diasemia reticularis is a species of moth of the family Crambidae. It is typically found in the tropics, but may range into Europe as far north as the North Sea region because of its migratory nature. The wingspan is 18–22 mm. The adults can be encountered all year if considering the species' entire range, but in subtropical and temperate regions they are rare outside the warm months.
The larvae feed mainly on Cichorieae, such as Cichorium (chicories), Hieracium (hawkweeds) and Picris (oxtongues), but also on Plantago (plantain herbs). More unusually, they have been recorded to feed on plant refuse and dry leaves.
As a result of its distinctive coloration and wing pattern the moth is occasionally referred to in France as chocolat marbré, or marbled chocolate moth. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Pyrénées National Park | 🇫🇷 France |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Lettered China-Mark sighting in Pyrénées National Park on a given day, based on 24 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 415th most-seen of the 1277 insects we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
May to September
In those months about 10% of wildlife watchers report a Lettered China-Mark in Pyrénées National Park on a given day, against under 5% in October to April, the lowest months.
Between 9 pm and midnight
Across all the parks we cover, that three-hour window holds the most Lettered China-Mark 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 Pyrénées National Park, in our data
Pyrénées National Park is the only park on Wallace's Line with enough records to rate Lettered China-Mark sightings: about 10% of wildlife watchers there report one on a given day.
Same family: Crambidae
The closest relatives of the Lettered China-Mark that you can see in Pyrénées National Park (family Crambidae, Crambid Snout Moths) are Box Tree Moth (about 10%), Straw-Barred Pearl (about 10%) and Rush Veneer (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Lettered China-Mark is recorded against all the insects logged in Pyrénées National Park (24 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.
