Fig. 6
Ephemera danica (Ephemeridae), subimago, region of bulla sc shown as volume rendering based on µCT data. A ventral view, dashed lines indicate different levels of cross cuts in B–D, E ventral view with longitudinal veins, crossveins and bulla sc indicated. Abbreviations: c: costal vein, sc: subcostal vein, cv1-3: crossveins in costal field, cv4-5: crossveins in subcostal field, bu: bulla, cutSI: subimaginal layer of cuticle, cutI: imaginal layer of cuticle, trab: trabeculae. Without scales