Phylogeny of Blattoidea (Dictyoptera: Blattodea) with a revised classification of Blattidae

Phylogeny of Blattoidea (Dictyoptera: Blattodea) with a revised classification of Blattidae

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Oils Blattoidea are comprised of the major lineages Blattidae, Lamproblattidae, Tryonicidae, Anaplectidae, and Cryptocercidae + Isoptera.Despite a number of studies, no consensus exists regarding the relationships between these lineages.Additionally, the current division of Blattidae into Archiblattinae, Blattinae, Macrocercinae and Polyzosteriinae needs phylogenetic testing.We present a molecular phylogeny of Blattoidea recovering all the major lineages as monophyletic with Lamproblattidae as sister to the remaining Blattoidea and Tryonicidae as sister to Cryptocercidae + Isoptera.

Contrary to many previous studies, we found a high degree of consistency between analyses, possibly due to improved taxon sampling.We found that none of the currently accepted subfamilies of Blattidae are monophyletic.Mapping of distribution revealed a clear geographic structuring at odds with the current subfamilial classification.Based on results from this and other studies, we present a revised classification of Blattidae: we erect two new subfamilies, Eurycotiinae stat.

rev.and Austrostylopyginae subfam.nov., reinstate Duchailluiinae stat.

rev.and subsume Macrocercinae in Polyzosteriinae.We also present a division of Polyzosteriinae into tribes: Polyzosteriini, Methanini stat.rev.

, Rothisilphini trib.nov., and Celatoblattini trib.nov.

Within Blattidae, Duchailluiinae is sister to the remaining taxa, while Austrostylopyginae is Gear Bags most likely sister to all other Blattidae except Duchailluiinae.