New fossil ephialtitids elucidating the origin and transformation of the propodeal-metasomal articulation in Apocrita (Hymenoptera).
New fossil ephialtitids elucidating the origin and transformation of the propodeal-metasomal articulation in Apocrita (Hymenoptera).
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新化石 ephialtitids 阐明了 Apocrita（膜翅目）原代-交代体关节的起源和转变
DOI：
10.1186/s12862-015-0317-1
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发表时间：
2015-03-13
影响因子：
3.4
通讯作者：
Ren D
中科院分区：
文献类型：
--
作者：
Li L;Shih C;Rasnitsyn AP;Ren D
研究背景无腹蛛属（Apocrita）具有特殊的结构，其第一腹节与胸合并为前肛节。剩余的腹部，即后体，通过一个狭窄的前足-后体关节连接到这个混合区域，形成一个“黄蜂腰”，它具有提供可操作性、灵活性和产卵姿势的重要功能。然而，前肢-后肢关节的起源和转化仍然是模糊的。Ephialtitidae作为早侏罗世至早白垩世Apocrita的基群，显示出各种类型的propodeal交代articulations. ResultsThis study described and illustrated two new genus with three new species，Acephialtitiasecrossagen. et sp. nov.，棘原瓶霉et sp. nov.和P.细牙属十一月，采自内蒙古早白垩世柳条沟义县组和中侏罗统道虎沟九龙山组。这些属根据其完整的翅脉而归属于Ephialtidae，例如2r-rs，2r-m，3r-m和2m-cu总是出现在前翅，Rs，M和Cu出现在后翅。这些新的化石epialtitids有保存完好的propodeal交代关节表明交代广泛重视propodeum.ConclusionThe广泛的关节之间的propodeum和交代在基础Ephialtitidae，可能通过从一个更基础的家庭Karatavitidae，建议三个独立的途径的转变的"黄蜂腰"在三个不同的衍生谱系Ephialtidae导致：（i）Kuafuidae和进一步的其余Apocrita，（ii）Stephanidae，和（iii）Evanioidea。此外，绒茧蜂的消亡落后于被子植物的繁荣，这表明绒茧蜂的灭绝可能主要是由与许多新分类群（如：在J/K界线之前或之后不久出现了大量的白垩纪木生植物Baissinae和Ichalonoidea。
BackgroundApocrita has a special structure that its first abdominal segment has been incorporated into the thorax as the propodeum. The remaining abdomen, metasoma, is connected to this hybrid region via a narrow propodeal-metasomal articulation forming a “wasp waist”, which serves an important function of providing maneuverability, flexibility and posture for oviposition. However, the origin and transformation of the propodeal-metasomal articulation are still vague. Ephialtitidae, as the basal group of Apocrita from the Early Jurassic to the Early Cretaceous, have shown various types of propodeal-metasomal articulations.ResultsThis study describes and illustrates two new genera with three new species,Acephialtitia colossagen. et sp. nov.,Proephialtitia acanthigen. et sp. nov. andP. tenuatasp. nov., collected respectively from the Early Cretaceous Yixian Formation at Liutiaogou and the Middle Jurassic Jiulongshan Formation at Daohugou, both in Inner Mongolia, China. These genera are assigned to the Ephialtitidae based on their complete wing venation, e.g. 2r-rs, 2r-m, 3r-m and 2 m-cu always present in the forewings and Rs, M and Cu in the hind wings. These new fossil ephialtitids have well-preserved propodeal-metasomal articulations indicating metasoma is broadly attached to propodeum.ConclusionThe broad articulation between the propodeum and metasoma in basal Ephialtitidae, likely passed on from a still more basal family Karatavitidae, suggests three separate pathways of the transformation of the “wasp waist” in three different derived lineages leading from Ephialtitidae to: (i) Kuafuidae and further to the remaining Apocrita, (ii) Stephanidae, and (iii) Evanioidea. In addition, the demise of ephialtitid wasps lagging behind the flourishing of angiosperms suggests that ephialtitid extinction might have been mainly driven by competition with numerous new taxa (eg. the abundant Cretaceous xylophilous Baissinae and Ichneumonoidea) appeared just before or/and soon after the J/K boundary.
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影响因子：
3.7
作者：
Li L;Rasnitsyn AP;Shih C;Ren D
通讯作者：
Ren D
影响因子：
2.1
作者：
Haichun, Z;Rasnitsyn, AP;Junfeng, Z
通讯作者：
Junfeng, Z
影响因子：
1.9
作者：
Leng, Q;Friis, EM
通讯作者：
Friis, EM
中国中侏罗世两种新黄蜂（膜翅目：Stephanoidea：Ephialtitidae）
影响因子：
3.3
作者：
Li Longfeng;Shih Chungkun;Ren Dong
通讯作者：
Ren Dong
DOI：
10.1098/rstb.2009.0227
发表时间：
2010-02-12
影响因子：
6.3
作者：
Friis, Else Marie;Pedersen, Kaj Raunsgaard;Crane, Peter R.
通讯作者：
Crane, Peter R.