Litoria aplini Richards & Donnellan, 2020
|Species Description: Richards, SJ, and SC Donnellan. 2020. Litoria aplini sp. nov., a new species of treefrog (Pelodryadidae) from Papua New Guinea. In J. Louys, S. O'Connor, and K. M. Helgen (eds.), Papers in Honour of Ken Aplin. Records of the Australian Museum, 5 72:325-337.|
Taxonomic Notes: Following the Australian Society of Herpetology, AmphibiaWeb uses Litoria instead of Ranoidea or Dryopsophus (contrary to Dubois and Fretey 2016 and Duellman et al 2016).
Litoria aplini is most morphologically similar to L. iris, L. majikthise, L. ollauro, L. richardsi, L. singadanae, and L. verae. Litoria aplini can easily be distinguished from the first four species by the presence of crenelated skin on the foot, the green to brown dorsal coloration, golden yellow coloration in the posterior ventral area, and the blue brown mottling in the inner hidden ventral surfaces of the thighs. Additionally, L. aplini can be distinguished from L. richardsi and L. singadanae by its larger size. And lastly, L. aplini can be distinguished from L. verea by the golden yellow ventral coloration as opposed to the orange coloration of L. verea (Richards and Donnellan 2020).
In life, the dorsal coloring is green to brown with fluctuating amounts of each color depending on the time of day. However, the head is mostly light green with flecks of darker green. The tympanum is also light green. The dorsal surface of the limbs has large patches of green mottling and small flecks of dark brown. The anterior ventral surface is white and turns to grey along the lateral edges. There are also small, dark flecks of brown along the ventral edge of the lower jaw. The posterior surfaces of the belly, the axillia, and the ventral surfaces of thighs are golden yellow in color with the hidden surfaces of the thighs being mostly blue with dark brown mottling. The tubercles on the ventral surfaces of thighs, the heel, and the area around the vent are ivory in color. The crenulated skin fold on the foot is white. The nuptial pads are brown. The iris is pale grey with dark-brown reticulations and an inner rim that is pale gold. In preservative, the green markings become blue, the beige-brown background color becomes grey, the blue on the hind limbs becomes darker, and the golden-yellow patches fade to cream (Richards and Donnellan 2020).
The four male specimens used to describe the species varied in the extent of green in their dorsal markings and the patterning of the brown blotches surrounding the golden-yellow patch near the vent (Richards and Donnellan 2020).
Distribution and Habitat
Country distribution from AmphibiaWeb's database: Papua New Guinea
Life History, Abundance, Activity, and Special Behaviors
Their coloration changes with the time of day, being darker at night (Richards and Donnellan 2020).
Males can be heard calling from 5 m high perches that overhang small, isolated pools of water (Richards and Donnellan 2020).
At air temperatures of 23.7°C, the call consists of a finely pulsed buzzed note lasting 0.026 – 0.062 s, followed by 1 - 7 shorter multi-pulsed clicks, which lasts 0.005–0.020s at a rate of 1.26 calls/s and having a dominant frequency of 2150 - 3336 Hz (Richards and Donnellan 2020). For more call information, please see Richards and Donnellan (2020).
Maximum Likelihood and Bayesian Inference analyses of ND4 mtDNA indicate that L. aplini is sister to the clade composed of L. iris and L. majikthise (Richards and Donnellan 2020).
The species epithet, “aplini”, is in honor of the late Dr. Ken Aplin, who greatly contributed to New Guinean herpetology and was a friend and collaborator of the authors of the species description (Richards and Donnellan 2020).
Richards, S.J., Donnellan, S.C. (2020). "Litoria aplini sp. nov., a new species of treefrog (Pelodryadidae) from Papua New Guinea." Records of the Australian Museum 72(5), 325–337. [link]
Originally submitted by: Adelaide Mullin (2022-12-14)
Description by: Adelaide Mullin (updated 2022-12-14)
Distribution by: Adelaide Mullin (updated 2022-12-14)
Life history by: Adelaide Mullin (updated 2022-12-14)
Comments by: Adelaide Mullin (updated 2022-12-14)
Edited by: Ann T. Chang (2022-12-14)
Species Account Citation: AmphibiaWeb 2022 Litoria aplini: Aplin’s Treefrog <https://amphibiaweb.org/species/9294> University of California, Berkeley, CA, USA. Accessed Jun 3, 2023.
Feedback or comments about this page.
Citation: AmphibiaWeb. 2023. <https://amphibiaweb.org> University of California, Berkeley, CA, USA. Accessed 3 Jun 2023.
AmphibiaWeb's policy on data use.