The Jurassic Bajanzhargalanidae (Insecta: Grylloblattida?): New genera and species, and data on postabdominal morphology
The Jurassic Bajanzhargalanidae (Insecta: Grylloblattida?): New genera and species, and data on postabdominal morphology
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侏罗纪 Bajanzhargalanidae（昆虫门：Grylloblattida？）：新属和新种，以及腹部后形态数据
DOI：
10.1016/j.asd.2015.04.008
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发表时间：
2015-11-01
影响因子：
2
通讯作者：
Ren, Dong
中科院分区：
文献类型：
--
作者：
Cui, Yingying;Bethoux, Olivier;Ren, Dong
现存的冰爬行动物（grylloblatida = ‘冠状grylloblatida ’）与分类单元概念grylloblatida sensu Storozhenko（2002）的化石物种之间假定的系统发育联系基本上是基于后腹部形态。然而，化石数据是有限的，其解释也存在争议。在这里，我们研究了一个鲜为人知的化石“grylloblatidan”科，Bajanzhargalanidae，收集自中国中侏罗世道虎沟地区。我们描述了Sinonele fangi gen. nov., sp. nov., Sinonele hei gen. nov., sp. nov., Sinonele phasmoides gen. nov., sp. nov.和Sinonele mini gen. nov.。由于材料的丰富和特殊保存，我们可以记录翼脉的种内变异性，为识别雄性和雌性个体提供线索，描述和初步解释两性的各种身体结构，并从广泛的翼状动物系统发育的角度来讨论它们。Bajanzhargalanidae表现出一种令人费解的后腹部特征组合，这使我们无法确定它们与冠状灰腹虫的亲缘关系，或者缺乏亲缘关系。我们的贡献表明，由于它们广泛的形态差异，需要付出大量的努力来进一步研究作为岩石印记保存的相对古老的昆虫化石的腹后结构。(C) 2015 Elsevier Ltd.版权所有。
The presumed phylogenetic link between extant ice-crawlers (Grylloblattidae = 'crown-Grylloblattida') and fossil species of the taxon concept Grylloblattida sensu Storozhenko (2002) is essentially based on postabdominal morphology. However, the fossil data are limited, and the interpretation is open to debate. Here we investigate a sample of a poorly known fossil 'grylloblattidan' family, the Bajanzhargalanidae, collected from the Daohugou locality (Middle Jurassic, China). We describe Sinonele fangi gen. nov., sp. nov., Sinonele hei gen. nov., sp. nov., Sinonele phasmoides gen. nov., sp. nov., and Sinonele mini gen. nov., sp. nov. Thanks to the abundance and exceptional preservation of the material, we could document wing venation intra-specific variability, provide cues to identify male and female individuals, describe and tentatively interpret various body structures of both sexes, and discuss them with a broad pterygotan phylogenetic perspective. The Bajanzhargalanidae exhibit a puzzling combination of postabdominal characters leaving us inconclusive on their affinities, or lack thereof, with crown-Grylloblattida. Our contribution suggests that a substantial effort will be needed to further investigate postabdominal structures from comparatively ancient fossil insects preserved as rock imprints, because of their broad morphological disparity. (C) 2015 Elsevier Ltd. All rights reserved.