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Abstract
A new genus Barbderma gen. nov. with a new species, Barbderma oblonguata sp. nov., and a new species, Sinoprotodiplatys ellipsoideuata sp. nov., of the family Protodiplatyidae are described from the Lower Cretaceous Yixian Formation at the Huangbanjigou Village, Beipiao City, Liaoning Province, China. Both new species are assigned to Protodiplatyidae mainly based on their diagnostic characters of antenna, pronotum, tegmina, tarsi and the distinct long, slender, multi-segmented cerci. These findings of fossil Protodiplatyidae provide more evidence to confirm the existence of these basal earwigs in the Early Cretaceous. Key diagnostic characters for genera of Protodiplatyidae are compared to highlight the generic variations and similarities. Evolutionary trend of cerci morphology suggests that it is likely that the cerci were evolved from long, slender and segmented to the stout terminal forceps without segmentation.
Published Version
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