Endangered
Arthroleptis tanneri
Arthroleptis tanneri
Arthroleptis tanneri is a frog in the family Arthroleptidae (order Anura), recorded as Endangered and tied to Tanzania.
Appearance
Males in the type series measure on average 34 mm (1.3 in) and females 51 mm (2.0 in) in snout–vent length. With a maximum snout-vent length of 55 mm (2.2 in), it is the largest of the Arthroleptis species. The head is slightly broader than long, with snout rounded in dorsal view.
Range and habitat
It is endemic to the West Usambara Mountains in northeastern Tanzania. Previous records from elsewhere refer to other species.
The species occurs in the Mazumbai, Baga II, Shume-Magamba Forest Reserves, although all these would need further protection.
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
Population trends of this species are unknown but it is believed to be in decline because of habitat loss and deterioration, that are caused by expanding agriculture, wood extraction, and human settlements. In 2015 the International Union for Conservation of Nature (IUCN) assessed it as "Endangered" because of its small distribution area and the ongoing habitat loss and deterioration.
Chytrid fungus, collection, and wet-forest loss are the usual pressures on frogs with a high threat category.
Arthroleptis tanneri 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 Arthroleptis tanneri, Wikidata item Q1941926. 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.
