Relict leopard frog

Appearance

The vocalizations of the relict leopard frog have been described as a "low rumbling 'snore'." Individuals measure 4.4–8.4 cm (1.7–3.3 in), and have a narrow, brown-colored body with darker spots and a beige-colored streak on the upper lip.

Range and habitat

Its historic range is along the Colorado River in extreme northwestern Arizona, and adjacent Nevada and southwestern Utah, although true to its name, its present range seems to be restricted to the Lake Mead National Recreation Area in Nevada, rendering it extirpated in Arizona and Utah. Its natural habitat is freshwater springs and their outlets. The relict leopard frog (Relict leopard frog, formerly Rana onca) is a frog in the family Ranidae, endemic to the United States.

Pins are Wikidata “endemic to” fields. Orange dots, when present, are GBIF occurrence tiles — survey bias included.

Breeding

Calling males and egg sites define most frog field work. A species known from one ridge is as narrow as it sounds.

Eggs and damp skin make amphibians quick to vanish from a drained wetland or a forest stripped of litter.

In crisis

In the mid-20th century, the relict leopard frog was declared to be extinct. It is threatened by habitat loss to agriculture and water development as well as invasive species.

Chytrid fungus, collection, and wet-forest loss are the usual pressures on frogs with a high threat category.

Relict leopard frog is Endangered on this catalog because that is the IUCN category stored on Wikidata. Confirm the official criteria and any later count on iucnredlist.org.

Sources

Written for this catalog from the English Wikipedia article on Relict leopard frog, Wikidata item Q2275158. Family and order context is original field-guide writing about the group, not a copied assessment of this one species. Wikipedia text is CC BY-SA. Not an IUCN assessment. Counts, when quoted, can change — confirm them on the recovery programme and on iucnredlist.org.