A new tree-frog genus and species from Ivory Coast, West Africa (Amphibia: Anura: Hyperoliidae)
A new tree-frog genus and species from Ivory Coast, West Africa (Amphibia: Anura: Hyperoliidae)
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西非象牙海岸的树蛙新属和新种（两栖类：无尾目：Hyperoliidae）
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
M. Veith
中科院分区：
文献类型：
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作者：
Mark‐Oliver Rödel;J. Kosuch;T. Grafe;R. Boistel;N. E. Assemian;N. G. Kouamé;Blayda Tohé;G. Gourène;J. Perret;K. Henle;P. Tafforeau;Nicolas Pollet;M. Veith
我们描述了来自西非上几内亚雨林的高脂树蛙的一个新属和新种。Morerella gen. nov. Rodel, Kosuch, Grafe， Boistel & Veith的特点是身材修长，眼睛突出；瞳孔水平的椭圆形瞳孔；鼓室小但明显的鼓室；雄性腺一种中等大小的中后状腺体，在腺体下面和周围没有薄的可扩张的皮肤；雄性背部和四肢有刺；蝶筛背侧不可见；蝶窦腹前部未融合；不完全覆盖椎管的非叠瓦状神经弓；第八椎体的横突不明显向前倾斜；大叉状的胸骨；完全骨化的胸骨；舌骨后外侧突缺失，前角由前内侧突和外侧突组成；在手指和脚趾尖上的圆形圆盘；趾骨岩间元素完全矿化；两性在颜色上是二色的；短音调广告呼叫，音符分组，不脉冲；陆生卵和水生幼虫阶段。新属与其他高脂属的遗传差异为18-35%（细胞色素b、16S和12S rRNA序列差异为100 - 1300 bp）。它在这个家族中的系统发育关系仍然不清楚。到目前为止，该属仅由一个物种组成，即Morerella cyanophthalma sp. nov. Rodel, Assemian, Kouame, Tohe & Perret，仅在象牙海岸Banco国家公园的几个地点被发现。来自科特迪瓦另一个地方阿扎尼国家公园的标本可能是同种的。根据世界自然保护联盟的红色名录标准，这种新物种被列为极度濒危物种。
We describe a new genus and species of hyperoliid tree-frog from the Upper Guinean rain forest, West Africa. Morerella gen. nov. Rodel, Kosuch, Grafe, Boistel & Veith is characterized by a slender body and large protruding eyes; a horizontal oval pupil; a small but distinct tympanum; a medium sized, medioposterior gular gland, without thin dilatable skin beneath and around the gland in males; spinosities on back and on extremities of males; sphenethmoid not visible dorsally; ventroanterior portion of sphenethmoid unfused; non-imbricate neural arches that do not completely roof the spinal canal; transverse processes of eighth vertebra not angled markedly forward; a greatly forked omosternum; a completely ossified sternum; posterolateral process of hyoid absent and anterior horn composed of an anteromedial and a lateral process; round discs on finger and toe tips; completely mineralized intercalary elements of phalanges; sexes dichromatic in coloration; short tonal advertisement call, notes grouped, not pulsed; terrestrial eggs and aquatic larval stages. The new genus differs genetically from other hyperoliid genera by 18-35% sequence divergence (>1300 bp of cytochrome b, 16S and 12S rRNA sequences). Its phylogenetic relationships within this family remain obscure. So far the genus is comprised of one species, Morerella cyanophthalma sp. nov. Rodel, Assemian, Kouame, Tohe & Perret, that is only known from a few sites in the Banco National Park, Ivory Coast. Specimens from another Ivorian locality, the Azagny National Park, may be conspecific. Based on the IUCN red list criteria, the new species is classified as Critically Endangered.