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BrakelsPeter, NguyenTan Van, PawangkhanantParinya, IdiiatullinaSabira S., LorphengsySengvilay, SuwannapoomChatmongkon, PoyarkovNikolay A.. 2023: 山中翡翠:老挝高海拔地区狭域分布的张树蛙属一新种(Amphibia: Anura: Rhacophoridae). 动物学研究, 44(2): 374-379. DOI: 10.24272/j.issn.2095-8137.2022.382
引用本文: BrakelsPeter, NguyenTan Van, PawangkhanantParinya, IdiiatullinaSabira S., LorphengsySengvilay, SuwannapoomChatmongkon, PoyarkovNikolay A.. 2023: 山中翡翠:老挝高海拔地区狭域分布的张树蛙属一新种(Amphibia: Anura: Rhacophoridae). 动物学研究, 44(2): 374-379. DOI: 10.24272/j.issn.2095-8137.2022.382
Peter Brakels, Tan Van Nguyen, Parinya Pawangkhanant, Sabira S. Idiiatullina, Sengvilay Lorphengsy, Chatmongkon Suwannapoom, Nikolay A. Poyarkov. 2023: Mountain jade: A new high-elevation microendemic species of the genus Zhangixalus (Amphibia: Anura: Rhacophoridae) from Laos. Zoological Research, 44(2): 374-379. DOI: 10.24272/j.issn.2095-8137.2022.382
Citation: Peter Brakels, Tan Van Nguyen, Parinya Pawangkhanant, Sabira S. Idiiatullina, Sengvilay Lorphengsy, Chatmongkon Suwannapoom, Nikolay A. Poyarkov. 2023: Mountain jade: A new high-elevation microendemic species of the genus Zhangixalus (Amphibia: Anura: Rhacophoridae) from Laos. Zoological Research, 44(2): 374-379. DOI: 10.24272/j.issn.2095-8137.2022.382

山中翡翠:老挝高海拔地区狭域分布的张树蛙属一新种(Amphibia: Anura: Rhacophoridae)

Mountain jade: A new high-elevation microendemic species of the genus Zhangixalus (Amphibia: Anura: Rhacophoridae) from Laos

  • 摘要: 综合形态、分子和鸣声分析数据,报道采自老挝东北部川圹省(Phou Samsoum Mountain, PSM)的新种——侧斑树蛙Zhangixalus melanoleucus sp. nov.。该新种具有以下形态鉴别特征能与同属物种相区分:体型中等(雄性头体长34.4–36.3 mm,雌性头体长53.7 mm);背面光滑,呈绿色;胸部和腹部无斑;体侧、腋下、前臂腹面、胯部、股部前后白色,具不规则的黑斑;指间蹼式I 2½–3 II 2–3 III 2¼–2 IV;趾间蹼式I 2–2½ II 1–2 III 1–2 IV 2–1 V;趾间蹼乳白色,具黑色小斑点;前臂及足外侧缘具弱肤棱;无肛上褶,无胫跗关节外缘肤褶;虹膜橙红色。基于16S rRNA片段序列,该新种与张树蛙属其他物种具有遗传分化(P=3.4%–8.8%),与黑点树蛙为姊妹种。该新种的广告鸣叫由连续音节组成,每个音节时长为0.28 s,由2–3个脉冲组成,主频约3.14 kHz。目前,侧斑树蛙仅知分布于PSM山区海拔2 000–2 200 m的常绿阔叶林。初步建议该新种在IUCN红色名录中的保护等级为“数据缺乏(DD)”。

     

    Abstract: We report on a new species, Zhangixalus melanoleucus sp. nov. , from Phou Samsoum Mountain (PSM) in Xiengkhouang Province, northeastern Laos, based on an integrative taxonomic approach, including morphological, molecular, and bioacoustic lines of evidence. Morphologically, the new species can be distinguished from its congeners by a combination of the following diagnostic characters: medium body size (SVL 34.4–36.3 mm in males, 53.7 mm in a single female); dorsum smooth and green; chest and belly lacking spots; flanks, axillae, ventral surfaces of forearms, inguinal, anterior and posterior surfaces of thighs white, covered with irregular black pattern; finger webbing formula I 2½–3 II 2–3 III 2¼–2 IV; toe webbing formula I 2–2½ II 1–2 III 1–2 IV 2–1 V; toe webbing cream with small black blotches; outer margin of forearms and feet with weak dermal ridges; supracloacal fold and pointed projection at tibiotarsal articulation absent; and iris reddish-orange. The new species is divergent from all other members of Zhangixalus based on 16S rRNA gene sequences (P=3.4%–8.8%) and is reconstructed as the sister species of Z. nigropunctatus. The advertisement call of the new species consists of clicking sounds and includes a series of notes, each 0.28 s in duration and consisting of 2–3 pulses with a dominant frequency of ca. 3.14 kHz. To date, Zhangixalus melanoleucus sp. nov. is known only from the montane evergreen forests of PSM at elevations of 2 000–2 200 m a.s.l. We preliminary suggest the new species should be considered as Data Deficient (DD) following the IUCN’s Red List categories.

     

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