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ChatmongkonSuwannapoom, TanVan Nguyen, ParinyaPawangkhanant, VladislavA. Gorin, SiriwadeeChomdej, JingChe, Nikolay A.Poyarkov. 2020: 泰国南部Micryletta属一新种. 动物学研究, 41(5): 581-588. DOI: 10.24272/j.issn.2095-8137.2020.139
引用本文: ChatmongkonSuwannapoom, TanVan Nguyen, ParinyaPawangkhanant, VladislavA. Gorin, SiriwadeeChomdej, JingChe, Nikolay A.Poyarkov. 2020: 泰国南部Micryletta属一新种. 动物学研究, 41(5): 581-588. DOI: 10.24272/j.issn.2095-8137.2020.139
Chatmongkon Suwannapoom, Tan Van Nguyen, Parinya Pawangkhanant, Vladislav A. Gorin, Siriwadee Chomdej, Jing Che, Nikolay A. Poyarkov. 2020. A new species of Micryletta (Amphibia: Microhylidae) from southern Thailand. Zoological Research, 41(5): 581-588. DOI: 10.24272/j.issn.2095-8137.2020.139
Citation: Chatmongkon Suwannapoom, Tan Van Nguyen, Parinya Pawangkhanant, Vladislav A. Gorin, Siriwadee Chomdej, Jing Che, Nikolay A. Poyarkov. 2020. A new species of Micryletta (Amphibia: Microhylidae) from southern Thailand. Zoological Research, 41(5): 581-588. DOI: 10.24272/j.issn.2095-8137.2020.139

A new species of Micryletta (Amphibia: Microhylidae) from southern Thailand

  • 摘要: 结合分子和形态学数据,该文描述泰国南部姬蛙科一新物种, Micryletta dissimulans sp. nov.。该新种体型小,雄性头体长20.3–22.4mm、雌性24.4–26.7mm;体型狭长;头长大于头宽;吻部钝圆;眶径与吻眼距等长;后肢前伸时胫跗关节至鼓膜;背部具微弱疣粒或磨砂状;颞褶不明显、其下缘黑色且眼后具黑斑;无外蹠突;背部红棕色伴有边缘米黄色的棕色斑块,斑块形状无规则、不清晰;背部无黑色斑点;体侧棕色、伴有白边的黑色斑点,腋下及胯部各具一较大的黑斑;头侧黑色、上唇白色,鼓膜及腋下具有白色喷点状斑;腹部粉灰色或蓝灰色,透明,侧面伴有深棕色云斑、中部无斑纹;雄性喉部深灰色、侧面伴有少量白色纹路;虹膜铜橙色。新种与已知种间在线粒体16S片段上分化明显(遗传距离5.0%–7.4%)。目前该新种仅已知分布于其位于泰国宋卡府Saba Yoi区的模式产地,海拔120m,但该种在邻近的马来西亚应亦有分布。依据IUCN濒危等级评估条款,研究建议将新种暂定为“数据缺乏”(DD)。

     

    Abstract: We report on a new species, Micryletta dissimulans sp. nov. , from the lowland forests of southern Thailand, which is described based on molecular and morphological evidence. The new species is characterized by a combination of the following characters: small body size (20.3–22.4 mm in males, 24.4–26.7 mm in females); slender body habitus; head longer than wide; snout rounded in dorsal and lateral view; eye length equal to snout length; tibiotarsal articulation reaching to tympanum; dorsal surface slightly granulated to shagreened; supratympanic fold indistinct, ventrally edged in black with large black spot behind eye; outer metatarsal tubercle absent; dorsum reddish-brown with merging irregular-shaped brown blotches edged in beige, no black spots on dorsum; body flanks brown with large black spots edged in whitish mottling, two large black blotches in axillary and inguinal areas on each side; lateral sides of head black, with white patches on lips absent, whitish mottling on tympanum and axillary region; ventral surface pinkish to bluish-gray, translucent, laterally with dark-brown marbled pattern, medially immaculate; throat in males dark-gray with sparse white mottling laterally; iris copper-orange. The new species is divergent from all other congeners in 16S rRNA gene sequences (5.0%–7.4%). To date, Micryletta dissimulans sp. nov. is only known from a single locality in Saba Yoi District, Songkhla Province, Thailand, at an elevation of 120 m a.s.l., but is also expected to occur in neighboring parts of Malaysia. We suggest Micryletta dissimulans sp. nov. be considered as a Data Deficient (DD) species following the IUCN’s Red List categories (IUCN Standards and Petitions Committee, 2019).

     

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