Megophrys acuta Wang, Li and Jin sp. nov. Holotype. SYS a002267, adult male, collected on 15 August 2013 by Yu-Long Li (YLL hereafter), Kai Chen (KC hereafter) and Ying-Yong Wang (YYW hereafter) from Heishiding Nature Reserve (HNR hereafter) (23°28'27" N, 111°53'53" E; 277.1 m a.s.l.), Fengkai County, Guangdong Province, China. (Figure 3) Paratypes. 14 specimens (9 adult males, four adult females, one juvenile), from HNR at elevations between 277.1–433.6 m a.s.l.. SYS a002266–2269, 2276, adult males, collected on 13–20 August 2013 by YLL, KC, Zu- Yao Liu (ZYL hereafter) and YYW; SYS a002159, adult male, collected on 2 June, 2013 by YLL; SYS a001957, adult male, collected on 12 November, 2012 by Run-Lin Li (RLL hereafter); SYS a002278, adult male, collected on 28 June, 2012 by YYW; SYS a000165, 0 169, adult males, collected on 2 May, 2008 by Jian-Huan Yang (JHY hereafter) and YYW; SYS a000517, adult female, collected on 28 May, 2009 by JHY; SYS a000521, adult female, collected on 5 April, 2009 by JHY; SYS a000187, adult female, collected on 29 May, 2008 by JHY and YYW; SYS a000168, adult female, collected on 2 May, 2008 by JHY and YYW; SYS a002274, juvenile, collected on 20 August 2013 by ZYL and YYW. Diagnosis. Megophrys acuta sp. nov. is characterized by the combination of following characters: (1) A slender and small-sized species measuring 28.1–33.6 mm in snout-vent length (SVL) in adult females, 27.1–33.0 mm in SVL in adult males; (2) head width slightly larger than head length; (3) snout remarkably pointed in dorsal view, strongly projecting, sloping backward to mouth in profile, protruding well beyond margin of lower jaw; (4) canthus rostralis well developed; (5) tympanum great and distinct; (6) no vomerine teeth; (7) margin of tongue smooth, not notched behind; (8) the heels not meeting; (9) tibio-tarsal articulation reaches forward the pupil of eye; (10) tibia relatively short, 0.38–0.45 of SVL; (11) relative finger length I 40 mm: M. aceras Boulenger, M. ancrae Mahony, Teeling & Biju (SVL> 39 mm), M. auralensis Ohler, Swan & Daltry, M. baolongensis Ye, Fei & Xie,, M. binlingensis Jiang, Fei & Ye, M. caudoprocta Shen, M. damrei Mahony, M. gigantica Liu, Hu & Yang, M. glandulosa Fei, Ye & Huang, M. jingdongensis Fei & Ye, M. lekaguli Stuart, Chuaynkern, Chan-ard & Inger, M. longipes Boulenger, M. major Boulenger, M. mangshanensis, M. medogensis Fei, Ye & Huang, M. megacephala Mahony, Sengupta, Kamei & Biju, M. nankiangensis Liu & Hu, M. omeimontis, M. robusta Boulenger, M. sangzhiensis Jiang, Ye & Fei., M. shapingensis Liu, M. shuichengensis Tian, Gu & Sun, M. spinata and M. takensis Mahony. From the remaining 19 small-sized congeners with SVL shorter than 40 mm, M. acuta sp. nov. can be steadily distinguished by the combination of following characters: Hindlimbs short, its heels not meeting when the hindlimbs are flexed and the thighs are held at right angles to the body axis vs. relatively long, heels meeting or overlapping in M. binchuanensis Ye & Fei, M. boettgeri, M. cheni, M. daweimontis Rao & Yang, M. huangshanensis, M. jinggangensis, M. lini, M. oropedion Mahony, Teeling & Biju, M. pachyproctus Huang, M. palpebralespinosa Bourret, M. parva (Boulenger), M. tuberogranulatus Shen, Mo & Li, M. vegrandis Mahony, Teeling & Biju, M. wawuensis Fei, Jiang & Zheng, M. wuliangshanensis Ye & Fei, M. wushanensis Ye & F ei, M. zhangi Ye & Fei; horn-like tubercles slightly large, remarkably prominent at edge of upper eyelids vs. small, indistinct or absent in M. binchuanensis, M. boettgeri, M. cheni, M. daweimontis, M. huangshanensis, M. lini, M. oropedion, M. pachyproctus, M. parva, M. tuberogranulatus, M. wawuensis, M. wuliangshanensis and M. wushanensis, and M. zhangi; vomerine teeth absent vs. present in M. daweimontis, M. jinggangensis, M. oropedion, M. pachyproctus, M. palpebralespinosa, M. parva, M. serchhipii (Mathew & Sen), M. zhangi, M. zunhebotoensis (Mathew & Sen); margin of tongue not notched vs. notched in M. boettgeri, M. cheni, M. huangshanensis, M. oropedion, M. pachyproctus, M. vegrandis, M. wawuensis and M. zhangi; lateral fringes minute, narrow on toes vs. wide in M. cheni, M. lini, M. binchuanensis, M. boettgeri, M. palpebralespinosa, M. wushanensis (in males), and lacking lateral fringes in M. daweimontis, M. huangshanensis, M. oropedion, M. pachyproctus, M. parva, M. tuberogranulatus, M. wawuensis, M. wuliangshanensis, M. wushanensis (in females); shank short, TIB / SVL ratio 0.38–0.45 vs. 0.50–0.54 in M. cheni, 0.54 in M. daweimontis, 0.47–0.50 in M. jinggangensis, 0.46–0.53 in M. lini, 0.49 in M. pachyproctus and M. zhangi, 0.55 in M. palpebralespinosa, 0.48–0.53 in M. parva, 0.45–0.51 in M. tuberogranulatus, 0.49–0.54 in M. vegrandis, 0.51–0.59 in M. wawuensis, 0.50–0.51 in M. wuliangshanensis, 0.47–0.48 in M. wushanensis, 0.46–0.50 in M. zunhebotoensis; tympanum great, distinct, tympanum diameter (TMP) / eye diameter (EYE) ratio 0.57–0.71 vs. small or indistinct in M. cheni (0.41–0.54), M. binchuanensis (0.33–0.50), M. huangshanensis (<0.5), M. pachyproctus (0.29), M. palpebralespinosa (tympanum small), M. parva (0.4), M. serchhipii (0.39), M. tuberogranulatus (0.50), 0.44–0.56 in M. vegrandis, M. wawuensis (0.33), M. wuliangshanensis (0.50), wushanensis (0.50) and M. zhangi (0.50); nuptial spines absent in adult males vs. present in M. binchuanensis, M. boettgeri, M. huangshanensis, M. lini, M. oropedion, M. pachyproctus, M. palpebralespinosa, M. tuberogranulatus, M. wawuensis, M. wuliangshanensis, M. wushanensis, M. zhangi. Description of holotype. An adult male individual. Body slender and small with 32.2 mm in SVL; head length (HDL) slightly shorter than head width (HDW), HDW/HDL ratio 1.07; snout pointed in dorsal view, strongly projecting, sloping backward to mouth in profile, protruding well beyond margin of lower jaw; top of head flat; eye large, EYE 35% of HDL, pupil vertical; nostril oblique ovoid with low flap of skin laterally; canthus rostralis sharp, well developed; loreal region vertical, not concave; internasal distance (IND) larger than interorbital distance (IOD); tympanum great, distinctly visible, TMP/EYE ratio 0.68; tympanum-eye distance (TEY) small, TEY 1.6 mm, TEY/TMP ratio 0.64; choanae large, ovoid at the bases of the maxilla; two vomerine ridges weak, no vomerine teeth; margin of tongue smooth, not notched behind. Forelimbs moderately slender; radioulna length (RAD) 25% of SVL, hands without web, moderately longer, hand length (HND) 24% of SVL; fingers slender, no lateral fringes, relative finger length I

Published as part of Li, Yu-Long, Jin, Meng-Jie, Zhao, Jian, Liu, Zu-Yao, Wang, Ying-Yong & Pang, Hong, 2014, Description of two new species of the genus Megophrys (Amphibia: Anura: Megophryidae) from Heishiding Nature Reserve, Fengkai, Guangdong, China, based on molecular and morphological data, pp. 449-471 in Zootaxa 3795 (4) on pages 453-463, DOI: 10.11646/zootaxa.3795.4.5, http://zenodo.org/record/252145