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1 December 2011 Redescription of the holotype of Phyloblatta gaudryi (Agnus, 1903) (Pennsylvanian; Commentry, France), an exceptionally well-preserved stem-dictyopteran
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Abstract

The holotype of Phylobktta gaudryi (Agnus, 1903), provided from the famous deposit of Commentry (Allier, France), exhibits a pair of forewings and a hind wing in connection, well preserved. Forewings show a network of veinlets in the area between M and CuA, and evidence of a fusion of some branches of M with CuA. It is concluded that the m-cua veinlets belong to M and that a reticulated fusion between M and CuA occurs. This fusion is considered as a homologue of the “dictyopteran forewing arculus”, but as an intermediate polymorphic state between “occurrence of a single discrete arculus“ and “no arculus”. The preserved hind wing is devoid of an m-cua arculus, has a multi-branched AA vein on the remigium, and has a vannus of limited extent. The new data on P. gaudryi might allow the phylogenetic position of Pennsylvanian stem-dictyopterans with respect to crown-dictyopterans to be better assessed.

© Publications Scientifiques du Muséum national d'Histoire naturelle, Paris.
Olivier Béthoux, Jörg W. Schneider, and Klaus-Dieter Klass "Redescription of the holotype of Phyloblatta gaudryi (Agnus, 1903) (Pennsylvanian; Commentry, France), an exceptionally well-preserved stem-dictyopteran," Geodiversitas 33(4), 625-635, (1 December 2011). https://doi.org/10.5252/g2011n4a4
Accepted: 25 May 2009; Published: 1 December 2011
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