New insights on the systematics and reproductive behaviour in tree frogs of the genus Feihyla, with description of a new related genus from Asia (Anura, Rhacophoridae) Author Biju, S. D. 0000-0003-1039-4421 Systematics Lab, Department of Environmental Studies, University of Delhi, Delhi, India & sdbiju @ es. du. ac. in; https: // orcid. org / 0000 - 0003 - 1039 - 4421 sdbiju@es.du.ac.in Author Garg, Sonali 0000-0002-0048-4346 Systematics Lab, Department of Environmental Studies, University of Delhi, Delhi, India & sgarg. du @ gmail. com; https: // orcid. org / 0000 - 0002 - 0048 - 4346 sgarg.du@gmail.com Author Gokulakrishnan, G. 0000-0002-3574-1891 Andaman and Nicobar Regional Centre, Zoological Survey of India, Port Blair, Andaman and Nicobar Islands, India & gokul 7701 @ gmail. com; https: // orcid. org / 0000 - 0002 - 3574 - 1891 gokul7701@gmail.com Author Chandrakasan, Sivaperuman 0000-0002-3582-7767 Andaman and Nicobar Regional Centre, Zoological Survey of India, Port Blair, Andaman and Nicobar Islands, India & c _ sivaperuman 1 @ rediffmail. com; https: // orcid. org / 0000 - 0002 - 3582 - 7767 c_sivaperuman1@rediffmail.com Author Thammachoti, Panupong 0000-0003-3477-8964 Department of Biology, Faculty of Science, Chulalongkorn University, Phyathai Road, Pathumwan, Bangkok, Thailand. tatsuya _ th @ hotmail. com; https: // orcid. org / 0000 - 0003 - 3477 - 8964 tatsuya_th@hotmail.com Author Ren, Jinlong Author Gopika, C. 0000-0002-0047-0438 Systematics Lab, Department of Environmental Studies, University of Delhi, Delhi, India & gopikacjnv 33 @ gmail. com; https: // orcid. org / 0000 - 0002 - 0047 - 0438 gopikacjnv33@gmail.com Author Bisht, Karan 0000-0001-9595-3450 Systematics Lab, Department of Environmental Studies, University of Delhi, Delhi, India & karranbisht 5 @ gmail. com; https: // orcid. org / 0000 - 0001 - 9595 - 3450 karranbisht5@gmail.com Author Hamidy, Amir Author Shouche, Yogesh text Zootaxa 2020 2020-11-12 4878 1 1 55 journal article 7940 10.11646/zootaxa.4878.1.1 b315551e-6683-4c2b-ab68-8913e9d70131 1175-5326 4424570 34C96340-F0F5-440F-AEEB-6AC50F175950 Rohanixalus nauli ( Riyanto and Kurniati, 2014 ) comb. nov. Nauli Bubble-nest Frog ( Figs. 1–2 , 4 , 7 , 15 ; Tables 1 , 3 , 4 ) Original name and description. Chiromantis nauli Riyanto and Kurniati, 2014 . Riyanto A. and Kurniati H. 2014. Three new species of Chiromantis Peters 1854 ( Anura : Rhacophoridae ). Russian Journal of Herpetology, 21: 65–73. Type. Holotype , MZB .Amph.14.916, by original designation. Type locality. “Teluk Nauli, Sibolga, North Sumatra Province ”, Indonesia . Current status of specific name. Valid name as Rohanixalus nauli ( Riyanto and Kurniati, 2014 ) comb. nov. Taxonomic remarks. This taxon was originally described from North Sumatra based on a single specimen. We examined the type specimen and found that this species is more closely related to members of the genus Rohanixalus than to Chirixalus . Further, R. nauli is morphologically similar to R. baladika described from West Sumatra (for detailed discussion see taxonomic remarks under R. baladika ). Subsequent new collections from North and West Sumatra show that R. baladika and R. nauli are likely to represent a single species, with a shallow divergence of 0.2–0.6%. Phylogenetically, the populations from North and West Sumatra are nested in the genus Rohanixalus ( Fig. 1 ). The dorsal colour and markings are also highly variable among the type specimens of R. baladika as well as new collections from regions across North and West Sumatra , especially the prominence of dorsal spots and dorsolateral stripes ( Fig. 14 ) that were originally used to distinguish the two species ( Riyanto & Kurniati 2014 ). We also report a Rohanixalus population from North Sumatra that was observed guarding a nest ( Fig. 7 ), which is suggested as a possible behavioural synapomorphy for diagnosis of the genus Rohanixalus (e.g., Li et al . 2009 ; Hertwig et al . 2013 ; present study). Hence based on available evidence, we propose to formally reallocate Chiromantis nauli Riyanto and Kurniati, 2014 (= Chirixalus nauli ) as Rohanixalus nauli ( Riyanto and Kurniati, 2014 ) comb. nov . However, R. nauli is likely to be a junior subjective synonym of R. baladika , pending further investigation. Diagnosis. Small-sized adults (male SVL 20.9 mm ), with slender body; snout subelliptical to nearly pointed in dorsal view; dorsal skin shagreened to sparsely granular; the entire dorsum, lateral surfaces, and dorsal surface of limbs covered with fine dark brown speckles (in the type ), some speckles clumping together to form dark irregular blotches or reticulation on the dorsum; a pair of obscure dorsolateral stripes present in the type (stated as absent in the original description); foot webbing moderate, up to the second subarticular tubercle on either side of toe IV ; eggs light green in colour and laid in bubble nests. Populations from north Sumatra were observed to have variable dorsal markings and degree of prominence of the dorsolateral stripes ( Fig. 14 ) . Genetic divergence. Sequence data from North and West Sumatra , potentially representing Rohanixalus nauli and R. baladika respectively, shows shallow divergence of 0.2–0.6%. TABLE 3. Inter and intraspecific uncorrected p-distances (in percent) in the genus Rohanixalus gen. nov. for the mitochondrial 16S rRNA gene sequences. Values indicate average distances followed by range in parentheses.

Taxa	1	2	3	4	5	6	7	8	9	10
1	Rohanixalus baladika	0.4 (0.2–0.6)
2	Rohanixalus hansenae	9.3 (8.3–11.3)	1.2 (0–3.2)
3	Rohanixalus cf. hansenae 1	10.7 (9.6–13.4)	5.7 (4.4–8.0)	2.5 (0–5.3)
4	Rohanixalus cf. hansenae 2	11.6 (11.1–12.0)	5.2 (4.1–6.7)	5.4 (4.5–6.3)	0.5 (0–1.0)
5	Rohanixalus shyamrupus	9.8 (9.4–10.1)	8.9 (8.2–10.2)	8.4 (7.3–10.0)	8.5 (8.3–9.2)	0.1 (0–0.4)
6	Rohanixalus senapatiensis	9.3 (8.7–9.6)	9.2 (8.6–10.7)	9.4 (7.9–10.5)	9.4 (9.1–9.8)	3.2 (3.0–3.4)	0.1 (0–0.2)
7	Rohanixalus cf. shyamrupus	8.5 (7.9–8.8)	9.4 (8.8–10.6)	9.4 (8.2–10.9)	9.3 (9.0–9.7)	2.8	2.9 (2.8–3.2)	0.3 (0–0.4)
8	Rohanixalus vittatus	11.0 (9.9–11.8)	10.9 (9.6–14.0)	11.9 (11.0–14.0)	12.1 (11.6–13.5)	9.3 (8.6–10.1)	9.6 (9.0–10.1)	8.7 (7.8–9.4)	0.9 (0–2.1)
9	Rohanixalus sp. 1	9.7 (9.4–9.9)	9.2 (8.4–11.3)	9.4 (8.7–11.6)	9.6 (9.4–9.9)	5.0 (5.0–5.2)	5.6 (5.5–5.9)	4.8 (4.7–4.9)	9.2 (9.0–9.6)	0.3 (0.3–0.4)
10	Rohanixalus sp. 2	9.4 (8.8–9.9)	8.4 (7.2–10.4)	9.0 (8.4–10.7)	8.9 (8.5–9.2)	4.5 (4.5–4.6)	5.2 (5.1–5.3)	4.3 (4.2–4.4)	8.7 (7.6–9.2)	2.3 (2.8–3.4)	1.2

Distribution. Rohanixalus nauli is currently known only from its type locality in North Sumatra Province , Indonesia .