Taxonomic revision of dragon lizards in the genus Diporiphora (Reptilia: Agamidae) from the Australian monsoonal tropics

Q2 Agricultural and Biological Sciences Memoirs of Museum Victoria Pub Date : 2019-01-01 DOI:10.24199/J.MMV.2019.78.02
J. Melville, K. Date, P. Horner, P. Doughty
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引用次数: 7

Abstract

Melville, J., Smith Date, K.L., Horner, P., and Doughty, P. 2019. Taxonomic revision of dragon lizards in the genus Diporiphora (Reptilia: Agamidae) from the Australian monsoonal tropics. Memoirs of Museum Victoria 78: 23–55. The Australian dragon lizard genus Diporiphora currently comprises 21 species based on genetic and morphological evidence, with 11 of these species occurring in the monsoonal tropics of northern Australia. Diporiphora are climbing lizards that are found on either trees, grasses or rocks, with usually only subtle morphological differences to distinguish between species. Since the last taxonomic treatment of this genus in northern Australia over 40 years ago, species delimitation using genetic techniques has clarified the number of lineages and increased collections from recent surveys have significantly broadened the distributions of these taxa. However, no formal taxonomic assessments have been undertaken to redefine species, including the many lineages that represent undescribed species. Currently, there are seven species of Diporiphora with vast distributions across northern Australia and a broad and variable set of morphological characteristics that make species identification challenging, even for experienced field workers. Here, we provide a comprehensive taxonomic treatment of Diporiphora species across northern Australia based on previously published genetic data and morphological examination of voucher specimens. Our analyses demonstrate that these broadly distributed taxa actually comprise multiple, often allopatric, species, with especially high diversity in the Kimberley region of Western Australia. We redescribe nine previously described species and describe five new species of Diporiphora based on historical types, newly collected material and older museum vouchers. In the D. australis species group, we resurrect D. jugularis Macleay from synonomy. In the D. bennettii species group, we synonomise D. arnhemica Storr with D. albilabris Storr, and raise to full species the latter and D. sobria Storr. In addition, we describe as new a wide-ranging saxicoline species previously attributed to D. bennettii Gray. In the D. bilineata species group, we resurrect D. margaretae Storr from synonomy with D. magna Storr and describe three new species. Lastly, we describe a species from the northwest Kimberley that is more closely related to an arid zone radiation. The revision of the northern Diporiphora dragons here stabilises the taxonomy, redefines many species distributions and reveals many new species. Further work on Diporiphora includes further surveys to better understand distributions and habitat preferences and continue to refine their evolutionary history and biogeography in northern Australia.
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澳大利亚季风热带地区龙蜥属(爬行纲:龙蜥科)的分类学修订
Melville, J., Smith Date, k.l., Horner, P.和Doughty, P. 2019。澳大利亚季风热带地区龙蜥属(爬行纲:龙蜥科)的分类学修订。维多利亚博物馆回忆录78:23-55。根据遗传和形态学证据,澳大利亚龙蜥属Diporiphora目前包括21种,其中11种出现在澳大利亚北部的季风热带地区。Diporiphora是一种爬类蜥蜴,可以在树上、草上或岩石上找到,通常只有细微的形态差异来区分物种。自40多年前在澳大利亚北部对该属进行最后的分类处理以来,利用遗传技术进行的物种划分已经澄清了谱系的数量,最近调查收集的资料也大大扩大了这些分类群的分布范围。然而,没有进行正式的分类评估来重新定义物种,包括许多代表未描述物种的谱系。目前,有7种Diporiphora在澳大利亚北部分布广泛,其广泛而多变的形态特征使物种识别具有挑战性,即使对经验丰富的野外工作者也是如此。在这里,我们根据先前发表的遗传数据和凭证标本的形态学检查,对澳大利亚北部的双孢菊物种进行了全面的分类处理。我们的分析表明,这些广泛分布的分类群实际上由多个物种组成,通常是异域物种,在西澳大利亚金伯利地区具有特别高的多样性。根据历史类型、新收集的资料和旧的博物馆凭证,我们重新描述了9个先前被描述的物种,并描述了5个新物种。在australis种组中,我们从synonomy中复活了d.j jugularis Macleay。在本种群中,我们将D. arnhemica Storr与D. albilabris Storr等同起来,并将后者和D. sobria Storr提升到全种。此外,我们描述了一个新的广泛的萨克碱物种以前归属于D. bennettii Gray。在D. bilineata种群中,我们从与D. magna Storr的同属中复活了D. margaretae Storr,并描述了3个新种。最后,我们描述了来自金伯利西北部的一种与干旱区辐射更密切相关的物种。对北方双裂孔龙的修订稳定了分类,重新定义了许多物种分布,并揭示了许多新物种。进一步的研究工作包括进一步的调查,以更好地了解分布和栖息地偏好,并继续完善它们在澳大利亚北部的进化历史和生物地理。
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来源期刊
Memoirs of Museum Victoria
Memoirs of Museum Victoria Agricultural and Biological Sciences-Agricultural and Biological Sciences (all)
CiteScore
1.10
自引率
0.00%
发文量
5
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