Forty years later: a new Andean stream treefrog of the genus Hyloscirtus (Anura: Hylidae) from Ecuador, with comments on arm hypertrophy in the H. larinopygion group Author Rivera-Correa, Mauricio Grupo Herpetológico de Antioquia, Instituto de Biología, Universidad de Antioquia, Medellín, Colombia. Author Ron, Santiago Museo de Zoología, Escuela de Biología, Pontificia Universidad Católica del Ecuador, Av. 12 de Octubre y Roca, Apartado 17 - 01 - 2184, Quito, Ecuador. Author Nunes, Ivan Laboratório de Herpetologia (LHERP), Instituto de Biociências, Campus do Litoral Paulista, UNESP, São Vicente, São Paulo, Brazil. Author Araujo-Vieira, Katyuscia Laboratório de Herpetologia, Departamento de Biodiversidade and Centro de Aquicultura (CAUNESP), Universidade Estadual Paulista-UNESP, Av. 24 A, 1515, Bela Vista, 13506 - 970, Rio Claro, São Paulo, Brazil. Author Pinheiro, Paulo D. P. Division of Amphibians & Reptiles, Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, D. C., 20560, U. S. A. Author Grant, Taran Departamento de Zoologia, Instituto de Biociências, Universidade de São Paulo, Rua do Matão, Trav. 14, no. 101, Cidade Universitária, 05508 - 090, São Paulo, SP, Brazil. text Zootaxa 2024 2024-06-26 5474 2 101 126 http://dx.doi.org/10.11646/zootaxa.5474.2.1 journal article 299057 10.11646/zootaxa.5474.2.1 e0cda728-afdb-4e59-a838-a22fa37d1052 1175-5326 12567391 9D116893-67D4-4F4F-8179-17D173FD4818

TABLE 1. Measurements (mm) of the type series of Hyloscirtus arcanus sp. nov. See Materials and Methods for abbreviations.

Measurements	Mean	Males (n = 3) SD Min		Max	Female (n = 1)
SVL	66.5	1.5	64.9	67.8	70.8
HL	18.6	0.8	17.7	19.3	19.6
HW	21.6	0.7	21.0	22.4	22.7
ED	7.4	0.2	7.2	7.5	7.6
EN	4.2	0.2	4.0	4.3	3.8
NSD	3.3	0.3	3.1	3.6	3.6
IND	5.1	0.5	4.7	5.7	5.1
AMD	11.2	0.8	10.5	12.1	11.6
TD	-	-	-	-	3.4
FAL	10.9	0.5	10.5	11.6	11.4
FAW	9.8	0.2	9.6	10.0	6.0
HAL	22.4	1.0	21.4	23.4	22.9
THL	31.1	0.2	31.0	31.3	34.8
TL	30.7	0.7	30.1	31.4	34.0
TAL	16.6	0.1	16.5	16.7	20.0
FL	28.6	1.1	27.4	29.4	32.3
TFD	3.6	0.5	3.1	4.0	3.4
FFD	3.5	0.1	3.4	3.6	3.2