100 Million years ago, in what is now the Hukawng Valley of Myanmar, an insect was trapped in tree sap and died. It was preserved as a fossil in amber. This insect has many unusual features that exclude it from all of our extant Orders of insects. A new order, Aethiocarenodea, was created for this new species, Aethiocarenus burmanicus.
Presumably this insect is adapted to exploring crevices in the bark of trees. This specimen is a wingless female with long legs and antennae. It has cerci on the tip of the abdomen found in many of the Neopteran orders. Perhaps future research and fossils will shed more light on its place among the insects.
*George Poinar, Alex E. Brown. An exotic insect Aethiocarenus burmanicus gen. et sp. nov. (Aethiocarenodea ord. nov., Aethiocarenidae fam. nov.) from mid-Cretaceous Myanmar amber. Cretaceous Research, 2017; 72: 100