A new genus and species of Bibionidae (Diptera: Bibionoidea) from mid-Cretaceous Kachin amber
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Abstract:
A new genus and species, Cretpenthetria burmensis gen. et sp. nov., is established and attributed to the family Bibionidae on the basis of a new well-preserved specimen from mid-Cretaceous amber of Kachin State, northern Myanmar. The new genus differs from other genera within Bibionidae in the following characteristics: 1) antennae elongated, about twice longer than head length; 2) vein Sc ending about at wing mid-length and opposite of basal 1/3 length of vein R2+3+4+5; 3) R2+3 equals in length to R2+3+4+5 and Rs. This finding improves not only the palaeodiversity of Bibionidae in Cretaceous amber, but also provides important three-dimensional morphological evidence for the early evolution of Bibionidae.
