Redescription of the holotype of Phyloblatta gaudryi (Agnus, 1903) (Pennsylvanian; Commentry, France), an exceptionally well-preserved stem-dictyopteran

Geodiversitas

Jörg W. Schneider¹  Klaus-Dieter Klass¹  Olivier Béthoux¹ 

关键词: Insecta;    Dictyoptera;    Pennsylvanian;    Late Carboniferous;    wing venation pattern;    arculus;    vannus;    Insecta;    Dictyoptera;    Pennsylvanien;    Carbonifère tardif;    patron de nervation alaire;    arculus;    vannus;   

DOI  :  10.5252/g2011n4a4

学科分类：生物科学（综合）

来源: Museum National d Histoire Naturelle

【 摘 要 】

TheholotypeofPhylobkttagaudryi(Agnus,1903),providedfromthefamousdepositofCommentry(Allier,France),exhibitsapairofforewingsandahindwinginconnection,wellpreserved.ForewingsshowanetworkofveinletsintheareabetweenMandCuA,andevidenceofafusionofsomebranchesofMwithCuA.Itisconcludedthatthem-cuaveinletsbelongtoMandthatareticulatedfusionbetweenMandCuAoccurs.Thisfusionisconsideredasahomologueofthe“dictyopteranforewingarculus”,butasanintermediatepolymorphicstatebetween“occurrenceofasinglediscretearculus“and“noarculus”.Thepreservedhindwingisdevoidofanm-cuaarculus,hasamulti-branchedAAveinontheremigium,andhasavannusoflimitedextent.ThenewdataonP.gaudryimightallowthephylogeneticpositionofPennsylvanianstem-dictyopteranswithrespecttocrown-dictyopteranstobebetterassessed.

【 授权许可】

Unknown