Stereocyclops parkeri is a species of frog in the family Microhylidae. It is endemic to southeastern Brazil and known from the southwestern part of the state of Rio de Janeiro and from Ilha de São Sebastião ("Ilhabela"), São Paulo state.[2][3] For a period it was treated as a synonym of Stereocyclops incrassatus, but is now recognized as valid species.[2]
| Stereocyclops parkeri | |
|---|---|
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Amphibia |
| Order: | Anura |
| Family: | Microhylidae |
| Genus: | Stereocyclops |
| Species: | S. parkeri
|
| Binomial name | |
| Stereocyclops parkeri (Wettstein, 1934)
| |
| Synonyms[2] | |
|
Hypopachus parkeri Wettstein, 1934 | |
Etymology
editThe specific name parkeri honors Hampton Wildman Parker, an English zoologist and herpetologist. It is sometimes known with the common name the Parker's Brazilian dumpy frog.[4]
Description
editStereocyclops parkeri measure about 40 mm (1.6 in) in snout–vent length.[3] The appearance is cryptic.[5]
Behavior
editStereocyclops parkeri show defensive behavior that may enhance its cryptic appearance, giving an impression of a casually dislodged leaf: when disturbed, the individual makes a short leap, landing with its legs stretched backwards. It will then remain still, sometimes as long as 30 minutes, although it may also move a little forward with a quick movement of the feet, resembling a flicked leaf. Similar behavior is observed in Proceratophrys belzebul (reported as Proceratophrys appendiculata, see Dias et al. (2013)[6]) and, in somewhat lesser form, in Zachaenus parvulus. Similar behavior in distantly related frogs suggests convergent evolution.[5]
Habitat and conservation
editStereocyclops parkeri inhabit coastal restinga scrub forests, forest edges, and primary and secondary forests near sea level.[1] They live in leaf litter.[5] The locality in Ilhabela was a vacant lot in an urban area where males were having a chorus in flooded grass.[3] Habitat loss caused by fire, tourism, and human settlement could be a threat to this species.[1]
References
edit- ^ a b c Oswaldo Luiz Peixoto, Sergio Potsch de Carvalho-e-Silva (2010). "Stereocyclops parkeri". IUCN Red List of Threatened Species. 2010: e.T58007A11713062. doi:10.2305/IUCN.UK.2010-2.RLTS.T58007A11713062.en. Retrieved 14 November 2021.
- ^ a b c Frost, Darrel R. (2017). "Stereocyclops parkeri (Wettstein, 1934)". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 30 June 2017.
- ^ a b c Sawaya, Ricardo J.; Haddad, Célio F. B. (2006). "Amphibia, Anura, Stereocyclops parkeri: distribution extension, new state record, geographic distribution map". Check List. 2 (3): 74–76. doi:10.15560/2.3.74.
- ^ Beolens, Bo; Watkins, Michael; Grayson, Michael (2013). The Eponym Dictionary of Amphibians. Pelagic Publishing. pp. 162–163. ISBN 978-1-907807-42-8.
- ^ a b c Sazima, Ivan (1978). "Convergent defensive behavior of two leaf-litter frogs of southeastern Brazil". Biotropica. 10 (2): 158. doi:10.2307/2388020. JSTOR 2388020.
- ^ Dias, Pedro H. dos Santos; Amaro, R. C.; Carvalho-e-Silva, Ana Maria P. T. de; Rodrigues, M. T. (27 June 2013). "Two new species of Proceratophrys Miranda-Ribeiro, 1920 (Anura; Odontophrynidae) from the Atlantic forest, with taxonomic remarks on the genus". Zootaxa. 3682 (2): 277–304. doi:10.11646/zootaxa.3682.2.5. PMID 25243288.