Lobeatta schneideri gen. and sp. nov., Anegertus cubitalis Handlirsch 1911, and Nectoptilus mazonus gen. and sp. nov., from the deposit of Mazon Creek (IL, USA; Upper Carboniferous), are described. They are shown to be close relatives of the genera Eoblatta Handlirsch 1906 and Ctenoptilus Lameere 1917. The latter genera, from French deposits nearly contemporaneous with Mazon Creek (Commentry, Montceaules-Mines), have been previously assigned to Archaeorthoptera Béthoux and Nel 2000. Additional evidence of archaeorthopterid affinities of the Mazon Creek species is provided. Ongoing reviews of North American and European Upper Carboniferous insect faunas might reveal more similarities than expected in their respective composition, although at a suprageneric taxonomic level.