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Description

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Austrochaperina blumi has a relatively narrow head with a roundish blunt snout when viewed dorsally and slightly projecting when seen laterally. Nostrils are placed laterally and are barely visible when viewed dorsally. Loreal region is nearly vertical and shallowly concave. The canthus rostralis is rounded. The tympanum is small and indistinct with a horizontal diameter of the annulus smaller than one-half that of eye. The largest from the collected series is a gravid female reaching 26.3 mm SVL; the largest male reached 24.4 mm SVL and had vocal sac openings. Relative finger lengths are as follows: 4>3>2>1, all with grooved terminal discs; first finger’s disc is slightly wider than penultimate phalanx. Toes are unwebbed and have the following relative length formula: 4>3>5>2>1. Subarticular tubercles are small and rounded. The dorsum is smooth and has a slightly raised midvertebral line and a shallow fold from the posterior corner of the eye across the upper edge of the tympanum. Coloration of the head, body and limbs is that of a pale tan with many small darker irregular spots. Lips are pale with darker spotting. The lower parts of the thighs are patterned/colored like the dorsum. Soles are dark and unspotted.
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Distribution and Habitat

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Austrochaperina blumi is found between elevations of 1400-1500 on the north slope of the central dividing range of Irian Jaya.
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Life History, Abundance, Activity, and Special Behaviors

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Nothing known.
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Austrochaperina blumi

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Austrochaperina blumi is a species of frog in the family Microhylidae.[1][3] It is endemic to New Guinea and known from the northern slopes of the New Guinean Central Range in Western New Guinea (Indonesia), and from the Bewani, Torricelli, and Hunstein Mountains in Papua New Guinea.[3][4] The specific name blumi honors J. Paul Blum,[2][5] the herpetologist who collected the type series.[2] Common name Kosarek land frog has been proposed for it.[5]

Description

Adult males measure 23–24 mm (0.9–0.9 in) and adult females 23–26 mm (0.9–1.0 in) in snout–vent length. The head is relatively narrow. The snout is truncate. The eyes are relatively large. The tympanum is small and indistinct. The finger and toe tips bear grooved discs. No webbing is present. The dorsal surfaces of the head, body, and limbs are pale tan scattered with many small, somewhat darker, irregular spots. The ventral ground color is pale tan, approaching white, but bearing numerous small, slightly darker spots on the throat and chest and fewer spots on the abdomen.[2]

Habitat and conservation

Austrochaperina blumi occurs in disturbed habitats, including villages, lawns, and rural gardens, and presumably also in forests,[1] at elevations of 340–1,840 m (1,120–6,040 ft) above sea level.[1][4] It is locally very abundant. Presumably, development is direct (i.e, there is no free-living larval stage[6]).[1] It is a very adaptable species that probably is not facing any threats. It is not known to occur in any protected areas.[1]

References

  1. ^ a b c d e f IUCN SSC Amphibian Specialist Group (2020). "Austrochaperina blumi". IUCN Red List of Threatened Species. 2020: e.T57688A151638732. doi:10.2305/IUCN.UK.2020-3.RLTS.T57688A151638732.en. Retrieved 14 November 2021.
  2. ^ a b c d Zweifel, R. G. (2000). "Partition of the Australopapuan microhylid frog genus Sphenophryne with descriptions of new species". Bulletin of the American Museum of Natural History. 253: 1–130.
  3. ^ a b c Frost, Darrel R. (2019). "Austrochaperina blumi Zweifel, 2000". Amphibian Species of the World: an Online Reference. Version 6.0. American Museum of Natural History. Retrieved 7 December 2019.
  4. ^ a b Kraus, Fred & Allison, Allen (2006). "Range extensions for reptiles and amphibians along the northern versant of Papua New Guinea" (PDF). Herpetological Review. 37 (3): 364–368.
  5. ^ a b Beolens, Bo; Watkins, Michael & Grayson, Michael (2013). The Eponym Dictionary of Amphibians. Pelagic Publishing. p. 25. ISBN 978-1-907807-42-8.
  6. ^ Vitt, Laurie J. & Caldwell, Janalee P. (2014). Herpetology: An Introductory Biology of Amphibians and Reptiles (4th ed.). Academic Press. p. 166.
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Austrochaperina blumi: Brief Summary

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Austrochaperina blumi is a species of frog in the family Microhylidae. It is endemic to New Guinea and known from the northern slopes of the New Guinean Central Range in Western New Guinea (Indonesia), and from the Bewani, Torricelli, and Hunstein Mountains in Papua New Guinea. The specific name blumi honors J. Paul Blum, the herpetologist who collected the type series. Common name Kosarek land frog has been proposed for it.

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