Plebejus argyrognomon
In 3 days ~50% in a week ~80%
Plebejus argyrognomon, common name Reverdin's blue is a butterfly of the family Lycaenidae. The species is named after Jacques-Louis Reverdin. In Japan the species is found in agricultural areas. These butterflies inhabit grassy flowery places at an elevation of 200–1,500 metres (660–4,920 ft) above sea level. Plebejus argyrognomon has a wingspan of 28–34 mm. These small butterflies present a sexual dimorphism. The... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bavarian Forest National Park | 🇩🇪 Germany |
More parks will be added in future updates.
Possible
About 20% of wildlife watchers report a Reverdin's Blue sighting in Daegu on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 23rd most-seen of the 38 insects we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
May
In that month about 40% of wildlife watchers report a Reverdin's Blue in Daegu on a given day, against under 5% in March, July and October, the lowest months. December has too few records to rate.
Between 4 and 7 pm
Across all the parks we cover, that three-hour window holds the most Reverdin's Blue sightings with a recorded time, and about 6 in 10 of them come between 6 am and 6 pm: it is most active around dawn and dusk.
Yes
Of the 6 cities where we can rate Reverdin's Blue sightings, Daegu has the highest daily chance: about 20%. Next come Beijing (China, about 10%) and Budapest (Hungary, about 10%).
Same family: Lycaenidae
The closest relatives of the Reverdin's Blue that you can see in Daegu (family Lycaenidae, Gossamer-winged Butterflies) are Large Copper (about 20%), Short-Tailed Blue (about 20%) and Pale Grass Blue (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Reverdin's Blue is recorded against all the insects logged in Daegu (9 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.
