Arcovomer
{{Short description|Genus of amphibians}}
{{Speciesbox
| status = LC
| status_system = IUCN3.1
| display_parents = 2
| parent_authority = Carvalho, 1954
| taxon = Arcovomer passarellii
| authority = Carvalho, 1954
}}
Arcovomer is a genus of frogs in the family Microhylidae.{{cite web |url=http://research.amnh.org/vz/herpetology/amphibia/Amphibia/Anura/Microhylidae/Gastrophryninae/Arcovomer/Arcovomer-passarellii |title=Arcovomer passarellii Carvalho, 1954 |author=Frost, Darrel R. |year=2014 |work=Amphibian Species of the World: an Online Reference. Version 6.0 |publisher=American Museum of Natural History |accessdate=10 April 2014}} It is monotypic, being represented by the single species Arcovomer passarellii, commonly known as Passarelli's frog.{{cite web |url=http://research.amnh.org/vz/herpetology/amphibia/Amphibia/Anura/Microhylidae/Gastrophryninae/Arcovomer |title=Arcovomer Carvalho, 1954 |author=Frost, Darrel R. |year=2014 |work=Amphibian Species of the World: an Online Reference. Version 6.0 |publisher=American Museum of Natural History |accessdate=10 April 2014}} It is endemic to south-eastern Brazil and found in Espírito Santo, Rio de Janeiro, and São Paulo states. Frogs from Espírito Santo may represent another, undescribed species. The name honours Antonio Passarelli who collected the holotype.{{cite journal |last1=Carvalho |first1=A. L. de |year=1954 |title=A preliminary synopsis of the genera of American microhylid frogs |journal=Occasional Papers of the Museum of Zoology, University of Michigan |volume=555 |pages=1–19 |url=http://deepblue.lib.umich.edu/bitstream/handle/2027.42/56993/OP555.pdf}}
Description and behaviour
Arcovomer passarellii is a small, slender-bodied frog. The male is about {{convert|16|-|20|mm|abbr=on}} in snout–vent length, and the female {{convert|22|-|26|mm|abbr=on}}. Its body is brown above with a distinct irregular dark pattern running the whole length of the animal.{{cite journal |last1=Giaretta |first1=Ariovaldo |last2=Martins |first2=Lucas |year=2009 |title=Notes on the call and behavior of Arcovomer passarellii (Anura: Microhylidae) |journal=Herpetology Notes |volume=2 |pages=91–93 |url=http://herpetologynotes.seh-herpetology.org/Volume2_PDFs/Giaretta_Martins_Herpetology_Notes_Volume2_pages91-93.pdf}}{{cite journal |author1=Malagoli, L.R. |author2=T.H. Condez |author3=C.F.B. Haddad |year=2012 |title=Arcovomer passarellii Carvalho, 1954 (Amphibia: Anura: Microhylidae): Distribution extension in São Paulo state, Brazil and geographic distribution map |journal=Check List |volume=8 |issue=3 |pages=505–506 |doi=10.15560/8.3.505 |doi-access=free |hdl=11449/42731 |hdl-access=free }}
Male frogs call after sunset. The advertisement call is a sharp, short whistle. When disturbed, these frogs may jump and then assume a stiff-leg posture, possibly as a means to avoid detection by predators relying on their sight.
Habitat and conservation
This species inhabits lowland primary and secondary forests. It is a ground-dwelling frog that breeds in temporary pools. Although it is a common species, it is declining in abundance, probably because of habitat loss.
References
{{Reflist}}
{{Taxonbar|from1=Q10734949|from2=Q1817325}}
Category:Monotypic amphibian genera
Category:Endemic frogs of Brazil
Category:Amphibians described in 1954