Biology:Dischidodactylus
| Dischidodactylus | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Amphibia |
| Order: | Anura |
| Clade: | Brachycephaloidea |
| Genus: | Dischidodactylus |
| Type species | |
| Elosia duidensis Rivero, 1968
| |
| Species | |
|
2 species (see text) | |
Mount Duida frogs[1] (Dischidodactylus) form a genus of brachycephaloid 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
The family in which Dischidodactylus should be placed is currently uncertain.[3] Amphibian Species of the World currently places it in superfamily Brachycephaloidea with family incertae sedis,[3] while AmphibiaWeb places it in Ceuthomantidae.[4] It had been placed in subfamily Ceuthomantinae within family Craugastoridae based on morphology because no DNA sequence data was available. Dischidodactylus was considered closely related to Ceuthomantis because they share a synapomorphy (completely or almost completely divided ungual flaps) and 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.[5]
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
- ↑ 1.0 1.1 1.2 Frost, Darrel R. (2017). "Dischidodactylus Lynch, 1979". American Museum of Natural History. http://research.amnh.org/vz/herpetology/amphibia/Amphibia/Anura/Brachycephaloidea/Craugastoridae/Ceuthomantinae/Dischidodactylus.
- ↑ 2.0 2.1 Hedges, S. B.; Duellman, W. E.; Heinicke, M. P. (2008). "New World direct-developing frogs (Anura: Terrarana): Molecular phylogeny, classification, biogeography, and conservation". Zootaxa 1737: 1–182. doi:10.11646/zootaxa.1737.1.1. http://www.hedgeslab.org/pubs/196.pdf.
- ↑ 3.0 3.1 Frost, Darrel R. (2023). "Dischidodactylus Lynch, 1979". Amphibian Species of the World: an Online Reference. Version 6.2. American Museum of Natural History. https://amphibiansoftheworld.amnh.org/Amphibia/Anura/Brachycephaloidea/Dischidodactylus.
- ↑ 4.0 4.1 "Strabomantidae". University of California, Berkeley. 2017. http://www.amphibiaweb.org/lists/Strabomantidae.shtml.
- ↑ 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.
Wikidata ☰ Q2215937 entry
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