Ephemera (Ephemera) transbajkalica Tshernova 1973 ...

• Main Author: Tiunova, Tatiana M.
• Format: Text
• Language: unknown
• Published: Zenodo 2024
• Subjects: Biodiversity; Taxonomy; Animalia; Arthropoda; Insecta; Ephemeroptera; Ephemeridae; Ephemera; Ephemera transbajkalica; Republic of Sakha; Sakha; Yakutia; Siberia
• Online Access: https://dx.doi.org/10.5281/zenodo.13618923; https://zenodo.org/doi/10.5281/zenodo.13618923

Ephemera (Ephemera) transbajkalica Tshernova, 1973 Figures 16–23 Material examined. Russia: Amur Oblast, Selemdzha River basin, Burunda River, mouth, tributary of Nora River, 16.06.2004, 2♀ adults, T. Tiunova; Republic of Sakha (Yakutia), Aldan River basin, Ungra River, base of Ungrinsky reserve “Yukhta,” 01.08.2006, 2♀ adults (reared), T. Tiunova. Distribution. East Siberia, Far East Russia, Mongolia. The egg is oval-shaped (Figs 16–17). Dimensions: 220.0–226.0 µm in length (220.8 µm) and 123.0–129.0 µm in width (124.6 µm). The thickness of the extrachorion-adhesive layer is 1.3–1.7 µm (Figs 21, 23). The surface of the adhesive layer is slightly roughened; almost smooth (Figs 16, 18). There are one or two micropyles in the equatorial area (Figs16–17); micropyles are “tagenoform-type”; sperm guide well expressed (10.0–19.6 µm long, 4.2–7.2 µm wide), elongated, oval, with pointed distal margin, not deep (Figs 18–19). Micropylar canal: 4.0–6.0 µm long and 2.3–7.1 µm wide; weakly protrudes above the adhesive ... : Published as part of Tiunova, Tatiana M., 2024, Egg morphology of six East Palaearctic species of the genus Ephemera Linnaeus (Ephemeroptera: Ephemeridae), pp. 381-399 in Zootaxa 5497 (3) on page 387, DOI: 10.11646/zootaxa.5497.3.4, http://zenodo.org/record/13618713 ...