Superregnum: Eukaryota
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Cladus: Craniata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Superclassis: Tetrapoda
Classis: Amphibia
Subclassis: Lissamphibia
Ordo: Anura
Familia: Brachycephalidae
Genus: Dischidodactylus
Species: D. colonnelloi – D. duidensis
Name
Dischidodactylus Lynch, 1979
Type species: Elosia duidensis Rivero, 1968
References
Lynch, 1979, Am. Mus. Novit., 2680: 5.
Amphibian Species of the World 5.1 Dischidodactylus access date 06 May. 2008
Vernacular names
English: Mount Duida Frogs
Mount Duida frogs[1] (Dischidodactylus), is a genus of craugastorid frogs endemic to the tepuis of southern Venezuela.[1] The scientific name is derived from the Greek dischidos, meaning divided, and dactylos, meaning finger or toe, in reference to the divided ungual flap (see below).[2]
Taxonomy
Placement of Dischidodactylus in the subfamily Ceuthomantinae (=Pristimantinae), family Craugastoridae, is based on morphology because no DNA sequence data are available. Dischidodactylus is closely related to Ceuthomantis, with which they share a synapomorphy: completely or almost completely divided ungual flaps. Both genera also have dorsal skin composed of small, flat, pliable (not keratinized) warts, and lack nuptial pads in adult males. They differ in that Dischidodactylus possess a dentigerous process of the vomer, and in that Ceuthomantis lack basal toe webbing.[3] However, the AmphibiaWeb places Dischidodactylus in an entirely different family, Strabomantidae, implying a distant relationship with Ceuthomantis.[4]
Description
Dischidodactylus are smallish frogs that reach a maximum snout–vent length of 43 mm (1.7 in) in females. Their head is not as wide as body. Tympanic membrane is not differentiated and tympanic annulus is visible below skin. Cranial crests are absent. Vomers have small, oblique dentigerous processes. Terminal discs are expanded, rounded, and bifurcate; circumferential groove is present and terminal phalanges are T-shaped. Dorsum is granular and venter is areolate.[2]
Species
The genus contains two species:[1][4]
Dischidodactylus colonnelloi Ayarzagüena, 1985
Dischidodactylus duidensis (Rivero, 1968)
References
Frost, Darrel R. (2017). "Dischidodactylus Lynch, 1979". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 14 July 2017.
Hedges, S. B.; Duellman, W. E. & Heinicke, M. P. (2008). "New World direct-developing frogs (Anura: Terrarana): Molecular phylogeny, classification, biogeography, and conservation" (PDF). Zootaxa. 1737: 1–182. doi:10.11646/zootaxa.1737.1.1.
Padial, J. M.; Grant, T.; Frost, D. R. (2014). "Molecular systematics of terraranas (Anura: Brachycephaloidea) with an assessment of the effects of alignment and optimality criteria". Zootaxa. 3825: 1–132. doi:10.11646/zootaxa.3825.1.1. PMID 24989881.
"Strabomantidae". AmphibiaWeb. University of California, Berkeley. 2017. Retrieved 14 July 2017.
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