专题库

经甫树蛙

2017年02月13日 02:18
phylum:Chordata
门:脊索动物门
class:Amphibia
纲:两栖纲
order:Anura
目:无尾目
科名:Rhacophoridae
中文科名:树蛙科
属名:Rhacophorus
种名:chenfui
中名:经甫树蛙
描述:形态 依据四川峨眉山(12雄、7雌及蝌蚪)标本。
成体:雄蛙体长36mm,雌蛙体长50mm左右,其他部位量度数据见表267。体较扁平头长、宽几乎相等或头长大于头宽吻端钝尖,稍突出于下唇吻棱明显,雄蛙自鼻孔向前倾斜较雌蛙明显鼻孔略近吻端,鼻间距与眼间距几乎等宽,而大于上眼睑宽鼓膜明显,距眼后角略远犁骨齿强,两列呈“ ”形,位于内鼻孔内侧前方舌长椭圆形,后端缺刻深。
前臂及手长略超过体长之半指端具吸盘,腹面边缘有马蹄形沟,腹面肉质垫明显第三、第四指吸盘大于鼓膜而小于上眼睑宽,指长顺序3、4、2、1指间均有蹼,外侧3指间具1/3蹼,第一、第二指间仅具蹼迹,以缘膜达指端关节下瘤发达,有单个或成行的指基下瘤内掌突椭圆形,外掌突小而不明显。后肢较短,前伸贴体时胫跗关节达眼后角,左、右跟部不相遇或仅相遇胫长不到体长之半,短于足长趾端与指端同,趾吸盘略小,背面均可见“Y”形迹第三、第五趾等长,达第四趾第三关节下瘤趾间半蹼,蹼缘缺刻深,以缘膜达吸盘的基部,外侧蹠间蹼不发达关节下瘤明显,有成行或单个的趾基下瘤内蹠突椭圆形,外蹠突不明显。
皮肤较光滑,背面满布均匀的细小痣粒,颖褶平直,达肩部上方。咽喉部及胸前部平滑有少数疣粒,腹部及股部下方密布扁平疣。沿前臂、跗外侧及肛上方有细窄的肤棱。
表267 经甫树蛙成体量度(四川峨眉山)
Table 267 Measurements of adults of Rhacophorus chenfui Liu (Emeishan, Sichuan)
单位:mm
项目 10♂♂ 6♀♀ 项目 10♂♂ 6♀♀
体 长
SVL 32.7—40.5
36.3 46.0—55.0
50.1 前臂及手长
LAHL 17.2—20.8
18.5
51.0% 25.0—28.8
26.9
53.7%
头 长
HL 13.2—15.5
14.2
39.1% 17.2—19.4
18.1
36.1% 前臂宽
LAD 3.0—4.0
3.4
9.4% 4.2—5.0
4.6
9.2%
头 宽
HW 12.2—15.2
13.2
36.4% 17.2—20.0
18.4
36.7% 手 长
HAL 10.8—12.6
11.7
32.2% 16.0—18.5
16.9
32.7%
吻 长
SL 5.8—7.0
6.3
17.3% 8.2—10.0
8.7
17.4% 后肢长
HLL 48.7—56.5
51.7
142.4% 70.5—80.0
74.9
149.5%
鼻间距
INS 4.0—5.0
4.5
12.4% 5.8—6.5
6.2
12.4% 胫 长
TL 15.0—17.0
15.9
43.3% 20.8—24.5
22.7
45.2%
眼间距
IOS 4.0—4.8
4.5
12.4% 5.5—6.5
6.2
12.4% 胫 宽
TW 3.8—4.0
3.9
10.7% 5.5—6.3
6.0
12.0%
眼睑宽
UEW 3.0—3.8
3.5
9.6% 4.0—4.3
4.1
8.2% 跗足长
TFL 23.0—26.5
24.0
66.1% 31.8—37.2
34.6
69.1%
眼 径
ED 4.2—5.4
4.8
13.2% 5.5—6.5
5.9
11.8% 足 长
FL 15.8—17.8
16.5
45.5% 21.5—26.0
23.4
46.7%
鼓 膜
TD 2.2—2.6
2.4
6.6% 2.3—3.0
2.7
5.4%

生活时背面纯绿色,常随栖息环境的明暗而有深浅的变化。上、下唇缘、体侧、四肢外侧及肛上方有一条乳黄色细线纹,线纹以下为藕褐色在匍匐状态下,体侧及四肢被遮盖部位为紫肉色。腹面金黄色,咽喉部紫肉色四肢腹面棕黄色,指、趾端及蹼浅橘红色。液浸标本背面为紫罗兰或灰蓝色,唇缘、体侧、四肢外缘及肛上方的线纹为白色,甚清晰腹面黄白色,咽喉部灰蓝色。
第二性征:雄蛙第一指基部有乳白色婚垫有单咽下外声囊雄性线紫红色。
变异:1974年采自湖北利川的32只雄蛙,检查其中20只标本,平均体长57mm左右,体长大于四川峨眉山及重庆秀山标本雌蛙8只与四川的一致。
蝌蚪:体形适中。生活时体棕黑色,尾色略浅。第34—36期时的蝌蚪,其足长4mm左右,头体长13mm,尾长21 mm左右,其他部位量度数据见表268尾肌较弱,上尾鳍前半低平,后半较高,尾末端钝圆。吻端圆,眼位头背面出水孔大,位体左侧肛孔小,基部成管状,斜开于下尾鳍基部右侧。口部位于头腹面,自上唇口角处至下唇有乳突两行,参差排列,大多数下唇中央缺1个乳突位置,副突少唇齿式有变异,检查20个标本,I:4+4/1+1:II者12个,I:4+4/III、I:5+5/III或I:3+3/III者各2个,I:3+4/1+1 :II、I:5+5/1+1 :II者各1个角质领适中。具四肢的变态期蝌蚪全长35mm,尾长20mm时,唇齿及角质颌已消失,指、趾关节下瘤及指基下瘤明显刚完成变态的幼蛙,体长15mm。
国内分布:地理分布四川(峨眉、洪雅、荣经、汉源、天全、宝兴、筠连和兴文)、重庆市(南川、酉阳、秀山)、湖南(桑植)、湖北(利川)、贵州(绥阳)、江
  • 物种名

    经甫树蛙

  • 拉丁名

    Rhacophorus chenfui

  • 脊索动物门 Chordata

  • 两栖纲 Amphibia

  • 蛙科 Ranidae

  • 资源编码

    21131117141

  • 描述

    I V. Rhacophorus chenfui, sp. nov. Type: No.528; adult female; Hui-ting-sze(慧灯寺), Mount Omei, Szechwan; 3850 feet altitude; July 25th, 1938; Collector C. C. Liu(刘承钊). Diagnosis: A Hyla- llke tree frog, smaller than denngsi savidi, leucomgstax, and slightly larger than oxgcephalus, Color uniform leaf green on back and lleshy purple on sides Tibiotarsal articulation only reaching the center of the eye in the new tree frog; tibi tarsal joint extending beyond the snout in oxgcephgalus. Description of type(figs. 12-15). Head equal un length an d widt, sloped anteriorlo; snout pointed, pointed, slope searting from internasla apace and projecting beyond the mouth. Tongue deeply notched at posterior end,and with many rounded papillae on dersal side; teo long rows lf vomerine teeth nenrly joining anterior dedges of choanae of choanae and converging posteriorly. From tip of snout to nostril longer than from nostril to anterior border of eye; canthus rostralis obtuse; loreal region oblique and sligh ly concave; nostril nostril slightly nearer to the eye; interorbital space slightly convex and greater than internasal space; eye woth horizontai pupil much larger than eyelid; tympanum small. distinct, and about half the interorbital space. Length of fore-limb about 60% of body length with a diameter of lower arm 10.4%. First linger is the sinallest and shortest, with a very small disc; second finger shorter than fourth; third finger being the longest, 27% of the body length with a disc 5%; ewbwell developed between second third, and fourth fingers, and feebly ondicated between first and second. Subart cular tubercles well developed. Discs somewhat aquarish at free ends. Hind limb moderate with tibiotarsal articulation reaehing the center of the eye; heels do not meet esch other when placed at light angles to the body; tibia about one third of the leg length; toes with discs similar in form and smaller in size to those of the fingers; webs slightly beyond the suba ticular tubercles next to the discs; intermetatarsal tubercle oval, prominent; outer tubercle being small. Skin eith granules above, with a glandulsr fold from posterior border of eye to shoulder, belly, and vetral side of femur with large polygona glandular areas; throat with smaller ones.

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