Ephemera undetermined

Ephemera sp. “Burrowing mayflies” Figures 22 (lateral), 23 (dorsal, ventral) Plates 11 (lateral), 12 (dorsal), 13 (ventral) Ephemera sp., a much larger species at approximately 1 cm body length, was scanned at 13.1 µm voxel size, lower resolution than the two baetid specimens at 2.3 µm and 4.1 µm. Smaller abdominal visceral tracheae visible in the baetid scans are likely present in Ephemera but not visible at the scanned resolution. DESCRIPTION: HEAD: Two H-DOc: H-DOc1 extending from H-Ocel, H-DOc2 from H-DCT. H-Ant barely visible in this scan, likely due to lower resolution. THORAX: T 1-VVi originating from H-DCT on left side; T 1-VVi1 from H-DCT and T 1-VVi2 from H-VCT on right side.
Published as part of Herhold, Hollister W, Davis, Steven R, Degrey, Samuel P & Grimaldi, David A, 2023, COMPARATIVE ANATOMY OF THE INSECT TRACHEAL SYSTEM PART 1: INTRODUCTION, APTERYGOTES, PALEOPTERA, POLYNEOPTERA, pp. 1-184 in Bulletin of the American Museum of Natural History 459 (1) on pages 1-184, DOI: 10.5531/sd.sp.55, http://zenodo.org/record/7730159