Etymology: To indicate it was originally included into the genus Mesoptilus.
Type species: Mesoptilus sellardsi Lameere, 1917; monotypic, see below.
Diagnosis.—Presence of two main veins (RP and MA?) emerging separately from radius; RP emerging distal of mid part of wing, instead of in the basal third or fourth; absence of brace or approximation between RP and median vein or between median vein and CuA.
Stratigraphic and geographic range.—Stephanian, Carboniferous (= Gzhelian, Upper Pennsylvanian), France.