Systematics of the Little Red Tree Frog, Litoria rubella (Anura: Pelodryadidae), with the description of two new species from eastern Australia and arid Western Australia Author Purser, William A. School of Biological Sciences, The University of Western Australia, Perth, WA 6009, Australia & Phoenix Environmental Sciences, 2 / 3 King Edward Road, Osborne Park, WA 6017, Australia Author Doughty, Paul Collections & Research, Western Australian Museum, 49 Kew Street, Welshpool, WA 6106, Australia Author Rowley, Jodi L. Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney, NSW 2010, Australia & Centre for Ecosystem Science; School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia Author Böhme, Wolfgang Zoologisches Forschungsmuseum Alexander Koenig, Bonn, Germany Author Donnellan, Stephen C. South Australian Museum, North Terrace, Adelaide, SA 5000, Australia Author Mitchell, Marion Anstis Nicola Author Shea, Glenn M. Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney, NSW 2010, Australia & Sydney School of Veterinary Science B 01, University of Sydney, NSW 2006, Australia Author Amey, Andrew Biodiversity and Geosciences, Queensland Museum, PO Box 3300, South Brisbane BC, Queensland 4101, Australia Author Mitchell, Brittany A. Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney, NSW 2010, Australia & Centre for Ecosystem Science; School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, NSW 2052, Australia Author Catullo, Renee A. School of Biological Sciences, The University of Western Australia, Perth, WA 6009, Australia & Collections & Research, Western Australian Museum, 49 Kew Street, Welshpool, WA 6106, Australia & Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney, NSW 2010, Australia text Zootaxa 2025 2025-02-28 5594 2 269 315 https://doi.org/10.11646/zootaxa.5594.2.3 journal article 308469 10.11646/zootaxa.5594.2.3 21ed7d07-59b0-42ef-982b-b9b4a1c8764e 1175-5326 14954346 5D61C55E-D042-4818-9D7B-087DEC250BFB

TABLE 2. Morphological traits measured on voucher specimens.

Morphological trait	Abv.	Definition
Snout–urostyle length	SUL	Distance from the tip of the rostrum to the most posterior point of the urostyle
Foot length	FOL	Distance from phalangeal apex to base of tarsals
Tibia length	TIB	Length of the tibia from outer margin to knee point
Femur length	FEL	Length of the femur
Lower arm length	LAL	Length of the radius
Upper arm length	UAL	Length of the humerus
Head width	HDW	Distance between the outer extremities of the head at the widest point
Distance between eyes	DFE	Distance between the front of the eyes
Inter-orbital distance	IOD	Distance between the occipital orbits
Inter-nares distance	IND	Distance between the interior edge of nares
Head length	HDL	Distance from the posterior tympanum region to the tip of the rostrum
Head depth	HD	Distance from the ventral and dorsal cranial surfaces measured - between the tympanum and eye
Snout length	SNT	Distance from the preocular region to the tip of the snout
Eye to nares distance	EN	Distance from the anterior edge of the eye and the posterior edge of the nostril
Nares to snout distance	NS	Distance from the nares to the tip of the snout
Eye width	EYE	The width of the eye at its widest point
Tympanum to eye	TEY	The distance from the rear of the eye and front of the tympanum
Tympanum width	TMP	The distance between the widest points of the tympanum
Third toe length	3TL	The length of the third toe from the proximal surface of the foot-toe junction to tip of toe
Third finger disc width	3FDW	The width of the third finger disc at its widest point
Third finger width	3FW	The width of the penultimate phalanx
Plantar length	PL	Length of the fourth toe from the toe tip to the heel
Fourth toe disc width	4TDW	Distance between the outer extremities of the fourth toe disc at the widest point
Fourth toe width	4TW	The distance between the outer extremities of the fourth toe below the disc
Inner metatarsal tubercle	IMT	The diameter of the tubercle located between the metatarsals