Early Cretaceous enigmatic insect group showing unique wing venations and antennal sensilla

Early Cretaceous enigmatic insect group showing unique wing venations and antennal sensilla
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早白垩世神秘昆虫群显示出独特的翅脉和触角感器

DOI:
10.1002/spp2.1402
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发表时间:
2021-09
影响因子:
2.3
通讯作者:
Dong Ren
Dong Ren
中科院分区:
地球科学2区
文献类型:
--
作者:
Hongru Yang;Chungkun Shih;Alex;r P. Rasnitsyn;Dong Ren;Dong Ren

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一个新灭绝的昆虫群,魔法虫。nov.在Magicivenidae fam.十一月,withM.stictasp. nov.(模式种)、秀丽隐杆藻M. eleganssp.十一月,M.antennalissp.十一月和M.例如,根据采自中国东北早白垩世义县组的4个标本,将其命名为Insectaincertae ordinis。Magicivenidae的特征是特殊的触角结构,例如每个鞭毛节都有两个横向的刚毛坑,以及前翅脉序,例如非常短的亚肋前(Sc),径向后(RS)明显丢失,弱肘后(CuP),以及穿过CuP并将肘前(CuA)连接到第一肛门静脉的单一交叉静脉,所有这些都不同于迄今为止记录的任何其他化石或现存昆虫分类群。根据其前翅具多枝CuA,后翅具数条长肛脉,尾须分节等特征,推测其应属多新翅目。一个好的飞行者的光的构造,在后翅的翼柱头的相似的结构,和在前胸背板上的横向沟都建议Magicivenidae和一个dictyopteridae家庭,Alienopteridae的平行进化。然而,先进的bimotory和一个可识别的RS的损失,使可能的亲和力Magicivenidae与Alienopteridae的问题,因为后者拥有最大的posteromotory和一个独特的RS。魔蚊科的触角及其复杂的感觉器官表明,这里描述的四个已知的魔蚊标本都是雄性;雌性还有待发现。这一新发现丰富了白垩纪昆虫群体的已知多样性。
A new extinct insect group,Magicivenagen. nov. in Magicivenidae fam. nov., withM.stictasp. nov. (type species),M. eleganssp. nov.,M.antennalissp. nov. andM. sp., is reported as Insectaincertae ordinisbased on four specimens from the Lower Cretaceous Yixian Formation of north‐eastern China. Magicivenidae are characterized by special antennal structures, such as each flagellomere having two lateral transverse rows of setiferous pits, and forewing venations such as a very short subcostal anterior (Sc), the radial posterior (RS) apparently lost, a weak cubital posterior (CuP), and a single cross‐vein crossing the CuP and joining the cubital anterior (CuA) to the first anal vein, all of which differ from those of any other fossil or extant insect taxa documented hitherto. According to the characters forewing with multibranched CuA, hind wing with several long anal veins, and segmented cerci, Magicivenidae should belong to Polyneoptera. The light constitution of a good flier, similar structure of the pterostigma in the hind wing, and transverse furrow on the pronotum all suggest the parallel evolution of Magicivenidae and a dictyopterid family, Alienopteridae. However, the advanced bimotory and loss of an identifiable RS make the possible affinity of Magicivenidae with Alienopteridae problematic, as the latter possess utmost posteromotory and a distinct RS. The antennae of Magicivenidae with their sophisticated sensory apparatus suggest that the four known specimens ofMagicivenadescribed here are all males; females are still to be discovered. This new finding enriches the known diversity of Cretaceous insect groups.
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