Isthmia nervosa Kützing. Prepared by Horace Barber. Mounted in Naphrax, dated 1954. Olympus BHB microscope using 450nm LED light. 10x Nikon Plan Apo NA 0.45 objective. Olympus Aplanat Achromat condenser, brightfield lighting. 2.5x Nikon CF PL photoeyepiece. Monochrome converted Nikon d850 camera. 14 images stacked in Zerene (Pmax).