Isthmohyla rivularis

Appearance

Males grow to 34 mm (1.3 in) and females to 37 mm (1.5 in) in snout–vent length. The snout is moderately short and acutely rounded. The dorsal color varies from grey to light brown.

Range and habitat

It occurs in the cordilleras of Tilarán, Central, and Talamanca in Costa Rica as well as adjacent western Panama. The species was thought to already have become extinct, but in 2007, it was re-discovered in the Monteverde Cloud Forest of Costa Rica when a single male was found.

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

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

Isthmohyla rivularis 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 Isthmohyla rivularis, Wikidata item Q2318655. 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.