Eurycea longicauda
Silhouette: PhyloPic
In 3 days ~10% in a week ~20%
Eurycea longicauda, commonly known as the long-tailed salamander or longtail salamander, is a species of lungless salamander native to the Appalachian Region and Ohio River valley of the eastern United States. It is a "cave salamander" that frequents twilight zones of caves and also inhabits springs and surrounding forest.
Eurycea guttolineata has earlier been treated as a subspecies of Eurycea longicauda (that is, as E. l. guttolineata), but is now considered a full species. The eggs measure 7 mm (0.28 in) in diameter. The larvae hatch in January–March at about 10 mm (0.39 in) snout–vent length (SVL)... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shenandoah National Park | 🇺🇸 United States | |
| 2 | Great Smoky Mountains National Park | 🇺🇸 United States |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Philadelphia | 🇺🇸 United States |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | National Zoological Park | 🇺🇸 United States | |
| 2 | Toledo Zoo | 🇺🇸 United States |
Rare
Under 5% of wildlife watchers report a Long-tailed Salamander sighting in Philadelphia on a given day, based on 8 verified sightings from GBIF citizen-science data. It is the 9th most-seen of the 10 amphibians we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
June, August and November
In those months about 10% of wildlife watchers report a Long-tailed Salamander in Philadelphia on a given day, against under 5% in July, September–October and December–May, the lowest months.
Between 10 am and 1 pm
Across all the parks we cover, that three-hour window holds the most Long-tailed Salamander sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Philadelphia, in our data
Philadelphia is the only city on Wallace's Line with enough records to rate Long-tailed Salamander sightings: under 5% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Long-tailed Salamander is recorded against all the amphibians logged in Philadelphia (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.
