Crossodactylus trachystomus

Crossodactylus trachystomus is a species of frog in the family Hylodidae. It is endemic to the Espinhaço Mountains in Minas Gerais, Brazil.[3][4]

Crossodactylus trachystomus

Data Deficient  (IUCN 3.1)[1][2]
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Hylodidae
Genus: Crossodactylus
Species:
C. trachystomus
Binomial name
Crossodactylus trachystomus
(Reinhardt and Lütken, 1862)
Synonyms

Tarsopterus trachystomus Reinhardt and Lütken, 1862 "1861"
Crossodactylus bresslaui Müller, 1924
Crossodactylus bokermanni (Caramaschi & Sazima, 1985)

Taxonomy

Until 2015 three Crossodactylus species were known from the Espinhaço Mountains: Crossodactylus trachystomus (not observed in the field since the mid 1980s), an undescribed species most similar to C. trachystomus, and Crossodactylus bokermanni described as a new species in 1985. Re-analysis of old samples and analysis of new samples could not show consistent differences between these taxa, for which Crossodactylus trachystomus is the valid name.[4]

Description

Males measure 8.7–25.1 mm (0.34–0.99 in) and females 20.5–27.5 mm (0.81–1.08 in) in snout–vent length. The body is slender, and the head is longer than wide. The canthus rostralis is sharp. The tympanum is distinct.[4]

Habitat and conservation

Crossodactylus trachystomus lives on the ground along permanent streams with sandy and rocky bottoms and bordered with grass and shrubs in montane savanna areas, and inside semideciduous Atlantic Forest. Breeding takes place in streams where males call exposed on stones or from sandy margins.[4]

Habitat loss is occurring in the range of this species. It occurs in the Serra do Cipó National Park.[1][2]

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References
  1. Pimenta, B. & Nascimento, L.B. (2010). "Crossodactylus trachystomus". IUCN Red List of Threatened Species. 2004: e.T56356A11451810. doi:10.2305/IUCN.UK.2010-2.RLTS.T56356A11451810.en.
  2. Pimenta, B. & Nascimento, L.B. (2004). "Crossodactylus bokermanni". IUCN Red List of Threatened Species. 2004: e.T56348A11466048. doi:10.2305/IUCN.UK.2004.RLTS.T56348A11466048.en.
  3. Frost, Darrel R. (2016). "Crossodactylus trachystomus (Reinhardt and Lütken, 1862)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 21 July 2016.
  4. Pimenta, Bruno V.S.; Caramaschi, Ulisses & Cruz, Carlos Alberto Gonçalves (2015). "Synonymy of Crossodactylus bokermanni Caramaschi & Sazima, 1985 with Crossodactylus trachystomus (Reinhardt & Lütken, 1862) and description of a new species from Minas Gerais, Brazil (Anura: Hylodidae)". Zootaxa. 3955 (1): 65–82. doi:10.11646/zootaxa.3955.1.3. PMID 25947837.
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