A new species of the genus Oreophrynella (Anura; Bufonidae) from the Guiana highlands

Señaris, J. Celsa; DoNascimiento, Carlos; Villarreal, Osvaldo

doi:10.1590/s0031-10492005000600001

Cited by 4 publications

(1 citation statement)

References 5 publications

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“…A poorly explored biodiversity hotspot, the Pakaraima Mountains of west-central Guyana (Fig. 1a) has already yielded more than 25 species of frogs new to science in the first two decades of the 21 st century (Noonan & Harvey 2000, Smith & Noonan 2000, MacCulloch & Lathrop 2002, 2005, Noonan & Bonett 2003, Señaris et al 2005, Kok 2006, 2009, Kok et al 2006, 2010, 2011, 2018a, Lathrop & MacCulloch 2007, Means & Savage 2007, MacCulloch et al 2008) including an entirely new family of frogs (Heinicke et al 2009). Aligned in a southeast to northwest direction along the borders of Guyana, Brazil, and Venezuela, the Pakaraima Mountains are a line of flat-topped table mountains called tepuis.…”

Section: Introductionmentioning

confidence: 99%

Exceptional diversity of Pristimantis Landfrogs (Anura: Terraranae) on the Wokomung Massif, Guyana, with descriptions of three new species

Means

Heinicke

MacCulloch

et al. 2023

Journal of Vertebrate Biology

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We describe three new species of landfrogs, genus Pristimantis, from near the summit of Mt. Kopinang, one of the several high points of the Wokomung Massif, a large horseshoe-shaped tepui (= mesa) in west-central Guyana. Pristimantis koki n. sp. is known from 1,067 to 1,525 m elevation. It is characterized by small-sized adults averaging 12.4 mm SVL (snout-vent length) in males and 18.4 mm in females; a pointed, depressed, elongated snout; lack of an obvious tympanum, vocal slit, or sac; and diagnostically black pigment prominently arranged around the anus fringed by light pigment. When handled, P. koki seems to emit volatile organic compounds and leaves a slightly numbing taste at the base of the human tongue. Pristimantis kopinangae n. sp. is known from three specimens collected at approx. 1,385 m elevation on the Wokomung Massif and two specimens from slightly higher in elevation on Mt. Ayanganna. About the size of most Pristimantis inhabiting the Guyana uplands and highlands (20-30 mm SVL), it is characterized by 2-3 light yellow inguinal flash-mark blotches, short broadly round snout, large eye with a blue iris, white skin of chin and areolate belly with dark brown vermiculations; and absence of a tympanum. Pristimantis kalamandeenae n. sp. is known from three specimens collected on the Wokomung Massif including an amplexing pair at approx. 1,550 m elevation. Similar in size to P. kopinangae, it is characterized by an acuminate snout, black iris, obvious tympanum, and uniform tan pigmentation dorsally after dark that becomes uniformly dark brown in daytime. Phylogenetic results show that P. koki and P. kopinangae are sister species and are members of a larger assemblage of related species endemic to the Pantepui Region within the P. unistrigatus species group. Pristimantis kalamandeenae is not closely related to these species, instead forming a clade with the P. lacrimosus species group. The three new species occur in sympatry with at least five other Pristimantis species on the Wokomung Massif, the greatest known Pristimantis species richness on a single tepui of the Guiana Shield.

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Section: Introductionmentioning

confidence: 99%

Exceptional diversity of Pristimantis Landfrogs (Anura: Terraranae) on the Wokomung Massif, Guyana, with descriptions of three new species

Means

Heinicke

MacCulloch

et al. 2023

Journal of Vertebrate Biology

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Fossil frogs from the upper Miocene of southwestern Brazilian Amazonia (Solimões Formation, Acre Basin).

Muniz

Bissaro-Júnior

Guilherme

et al. 2021

Journal of Vertebrate Paleontology

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A new species of Oreophrynella (Anura: Bufonidae) from the Pantepui region of Guyana, with notes on O. macconnelli Boulenger, 1900

Kok

2009

Zootaxa

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Oreophrynella seegobini sp. nov. is described from 2088 m elevation on Maringma tepui in the Pakaraima Mountains of Guyana, at the Guyana-Brazil border. The new species is mainly distinguished from known congeners by small size, indistinct frontoparietal crests, prominent postorbital crests, prominent suborbital crests, well-developed webbing on hand and foot, dorsal skin minutely spiculate with scattered medium to large elevated tubercles, ventral skin anteriorly rugose with few flat granules, posteriorly tuberculate, blackish brown dorsal colour, and dark brownish orange ventral colour. Data on four specimens of O. macconnelli collected on the southeast slope of the tepui are provided.

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A new species of the genus Oreophrynella (Anura; Bufonidae) from the Guiana highlands

Cited by 4 publications

References 5 publications

Exceptional diversity of Pristimantis Landfrogs (Anura: Terraranae) on the Wokomung Massif, Guyana, with descriptions of three new species

Exceptional diversity of Pristimantis Landfrogs (Anura: Terraranae) on the Wokomung Massif, Guyana, with descriptions of three new species

Fossil frogs from the upper Miocene of southwestern Brazilian Amazonia (Solimões Formation, Acre Basin).

A new species of Oreophrynella (Anura: Bufonidae) from the Pantepui region of Guyana, with notes on O. macconnelli Boulenger, 1900

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