Leptochrysa prisca Adams & Penny (Peru, Amazonas, female, FSCA): Venation at base of wings (a) left forewing, (b) right forewing, (c) left forewing, labeled, (d) left hindwing, labeled. Note the absence of a tympanal organ at the base of R (forewing), the independent origin and trajectory of M along the base of R [forewing and hindwing; see arrows in (a) and (d), and the short break at the base of a2-a3 (forewing)]. Because of the natural pleating of the wings, the space below the Sc appears very small relative to its actual size. The sc-r crossvein is actually slanted as shown. A1, A2, A3 first through third anal veins a2–a3 crossvein between A2 and A3 C costa Cu cubitus 1c-sc first crossvein between the costa and subcosta Fr frenulum icu1 first intracubital cell J jugal vein (forewing only) Ju jugal lobe M media 1m-cua first crossvein between the media and anterior cubital branch R radius Sc subcosta sc-r basal crossvein between the subcosta and radius.