Diatom. Colored scanning electron micrograph (SEM) of the surface of the mineralised cell wall (frustule) of an unidentified diatom

Diatom. Colored scanning electron micrograph (SEM) of the surface of the mineralised cell wall (frustule) of an unidentified diatom

Red lacewing butterfly egg (Cethosia biblis) - the lacy pattern marks the micropyle, where sperm enters. A similar design appears on the scaly wings that gave the red lacewing butterfly its name.  Colorized SEM images from a gallery at National Geographic by Martin Oeggerli at the Prüftechnik Uri and School of Applied Sciences, FHNW [presumably Fachhochschule Nordwestschweiz].

Red lacewing butterfly egg (Cethosia biblis) - the lacy pattern marks the micropyle, where sperm enters. A similar design appears on the scaly wings that gave the red lacewing butterfly its name. Colorized SEM images from a gallery at National Geographic by Martin Oeggerli at the Prüftechnik Uri and School of Applied Sciences, FHNW [presumably Fachhochschule Nordwestschweiz].

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