Celastrina lucia
In 3 days ~10%
Celastrina lucia, the lucia azure, northern azure, eastern spring azure or northern spring azure, is a species of butterfly of the family Lycaenidae. It is found eastern North America, ranging from the Maritimes south through the Appalachian Mountains to West Virginia.
The wingspan is between 22–35 mm. Adults are sexually dimorphic. They are on wing from April to July. The larvae feed on Vaccinium species, including V. pallidum. Until the early 1990s, most North American azures were thought to be a single species, Celastrina ladon. More recently, research has revealed that there are many different species of azures, including C. lucia, which had been treated as a subspecies of C. ladon.
Cherry gall azure (C. serotina) Holly azure (C. idella) Spring azure (C. ladon) Summer azure (C. neglecta) Data related to Celastrina lucia at Wikispecies Media related to Celastrina lucia at Wikimedia Commons Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Isle Royale National Park | 🇺🇸 United States | |
| 2 | Cape Breton Highlands National Park | 🇨🇦 Canada | |
| 3 | Riding Mountain National Park | 🇨🇦 Canada | |
| 4 | Elk Island National Park | 🇨🇦 Canada | |
| 5 | Gros Morne National Park | 🇨🇦 Canada | |
| 6 | Jasper National Park | 🇨🇦 Canada | |
| 7 | Acadia National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Edmonton | 🇨🇦 Canada | |
| 2 | Toronto | 🇨🇦 Canada | |
| 3 | Calgary | 🇨🇦 Canada | |
| 4 | Montreal | 🇨🇦 Canada | |
| 5 | New York City | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Northern Azure sighting in New York City on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 1492nd most-seen of the 1623 insects we can rate there. Over three days the chance rises to about 10%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Northern Azure in New York City on a given day, so our monthly data shows no clear season.
Between noon and 3 pm
Across all the parks we cover, that three-hour window holds the most Northern Azure sightings with a recorded time, and nearly all of them come between 6 am and 6 pm: it is a daytime animal.
5th of 5
Of the 5 cities where we can rate Northern Azure sightings, New York City ranks 5th at under 5%. The best odds are in Edmonton (Canada, about 20%), Toronto (Canada, about 10%) and Calgary (Canada, about 10%).
GBIF citizen-science records
It is estimated from how often the Northern Azure is recorded against all the insects logged in New York City (8 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.
