Abstract
The species kiarae sp. nov. is described on the basis of an incomplete fossil specimen yielded by the Pennsylvanian deposit of Piesberg near Osnabrück (Germany). A second incomplete specimen is tentatively assigned to the species. The species is erected under the new cladotypic nomenclatural procedure, but a proper Linnaean name is also provided (Forfexala kiarae gen. and sp. nov.). The holotype (and most complete specimen) is interpreted as a hind wing, and the species assigned to the taxon Archaeorthoptera. The combination of a simple CuPa, a common stem MP CuA (diverging from M CuA) separating into MP and CuA at the point of fusion of CuA with CuPa, a brief connection of the anterior branch of MA with RP, and a branched CuPb, indicate that the new species does not belong to any of the Archaeorthoptera groups previously reported in the Pennsylvanian. According to the estimated hind-wing length of the species (ranging from 85 to 100 mm), kiarae sp. nov. is the largest Archaeorthoptera of the period, and one of the largest ever. The new species shares the habitus of phasmatodeans, but definitive assignment to this group would require new investigations of the wing venation of its representatives.
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