Sphaenorhynchus surdus

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Sphaenorhynchus surdus
Sphaenorhynchus surdus.jpg

Least Concern (IUCN 3.1)[1]
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Amphibia
Order: Anura
Family: Hylidae
Genus: Sphaenorhynchus
Species:
S. surdus
Binomial name
Sphaenorhynchus surdus
(Cochran, 1953)
Synonyms[2]

Hyla aurantiaca surda Cochran, 1953
Sphoenohyla surda (Cochran, 1953)

Sphaenorhynchus surdus, or Cochran's lime treefrog, is a species of frog in the family Hylidae. It is endemic to southern Brazil and is known from the eastern Paraná, Santa Catarina, and northeastern Rio Grande do Sul states.[1][2] Before was described in 2007, all Sphaenorhynchus from the south of the state of São Paulo state all way south to Rio Grande do Sul were identified as S. surdus.[3]

Description[]

Adult males measure 23–29 mm (0.91–1.14 in) in snout–vent length. There is a dark dorso-lateral line running from the snout almost to the groin. No externally visible tympanum is present.[3] A late-stage tadpole (Gosner stage 37) measured 53.5 mm (2.11 in) in total length, of which the body made 18.5 mm (0.73 in).[4] Males call from the floating vegetation during the hot, rainy season. The call is short, usually less than 2 seconds in duration. The dominant frequency is 2.2–2.4 kHz.[3]

Habitat and conservation[]

The species' natural habitats are low bushes surrounding large permanent lakes at elevations of 100–1,200 m (330–3,940 ft) above sea level. Although an abundant species, water pollution is a threat to it.[1]

References[]

  1. ^ a b c Luis Felipe Toledo (2008). "Sphaenorhynchus surdus". IUCN Red List of Threatened Species. 2008: e.T56022A11411506. doi:10.2305/IUCN.UK.2008.RLTS.T56022A11411506.en. Retrieved 17 November 2021.
  2. ^ a b Frost, Darrel R. (2017). "Sphaenorhynchus surdus (Cochran, 1953)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 30 May 2017.
  3. ^ a b c Toledo, Luís Felipe; Garcia, Paulo C. A.; Lingnau, R.; Haddad, Célio F.B. (2007). "A new species of Sphaenorhynchus (Anura; Hylidae) from Brazil". Zootaxa. 1658: 57–68. doi:10.11646/zootaxa.1658.1.4.
  4. ^ Caramaschi, U. (2010). "Descrição do girino de Sphaenorhynchus surdus (Cochran, 1953) (Anura, Hylidae)" [Description of the tadpole of Sphaenorhynchus surdus (Cochran, 1953) (Anura, Hylidae)] (PDF). Boletim do Museu de Biologia Mello Leitão. Nova Série. 27: 67–74.
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