New females of Perlidae (Insecta: Plecoptera) from Cenomanian Burmese amber

Two new stoneflies, Starkoperla longusocollum gen. et sp. nov. and Zwickoperla brevicauda gen. et sp. nov. are described and illustrated based on two well-preserved females in mid-Cretaceous Burmese amber. The two genera are new extinct members of Perlidae and exhibit distinctive external characters when compared with both extant and extinct perlids. Morphological comparisons have been made between the new taxa and similar...