Species Description: Guenther R 2013 From a dwarf to a giant: Revalidation of Callulops valvifer (Barbour,1910), (Amphibia, Anura, Microhylidae). Zootaxa 3641: 271-181.
Callulops valvifer can be differentiated from other Callulops frogs by its large size, short legs, well developed circum-marginal grooves on all fingers and toes, short internarial distance relative to eye-naris distance, and advertisement call (see “Life History” section for more info on call; Günther 2013).
In life, both males and females are uniformly brown, with light grey flanks and ventral surfaces. However, the male is slightly darker than the female. Both sexes have a golden iris with black veins, and the female possesses a light-blue patch on the posterior and anterior corners of the eye. In preservative, the dorsal surfaces of the frogs are uniformly dark brown (male) and medium brown (female). In females, the ventral surface in preservative is a light grey-brown; the males are slightly darker. In both sexes, the ventral portion of the throat is darker than the surrounding ventral surfaces. Both sexes have a light spot on the dorsal surface of all finger and toe discs. Juveniles in preservative show different coloration than adults. The dorsal surfaces of the juvenile, as well as the sides, are dark brown (more likely black in life) speckled with abundant whitish spots. The venturm is also brownish (also likely black in life) with white spots (Günther 2013).
The variation that exists within the species is between the sexes (with males darker than females) and between adults and juveniles (juveniles possess spots, adults have uniform coloring; Günther, 2013).
Distribution and Habitat
Life History, Abundance, Activity, and Special Behaviors
Trends and Threats
This taxon was originally named Pomatops valvifera based on one juvenile specimen, and is also synonymised with Asterophrys, but recent morphological research and field work has reclassified this frog as Callulops valvifer (Günther 2013).
Callulops valvifer is the sister taxon of Callulops omnistriatus. This was determined using 12S rRNA and 16S rRNA data extracted from the specimens (Günther 2013).
Günther, Rainer. 2013. From a dwarf to a giant: Revalidation of Callulops valvifer (Barbour 1910), (Amphibia, Anura, Microhylidae). Zootaxa, 3641(3), p 271-281.
IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. Downloaded on 24 June 2013.
Written by Kayla Friedrichsen and Ann T. Chang (kaylafriedrichsen AT berkeley.edu), University of California Berkeley
First submitted 2013-06-24
Edited by Ann T. Chang (2013-06-28)
Species Account Citation: AmphibiaWeb 2013 Callulops valvifer <http://amphibiaweb.org/species/8006> University of California, Berkeley, CA, USA. Accessed Aug 22, 2017.
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Citation: AmphibiaWeb. 2017. <http://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 22 Aug 2017.
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