Micropyle Caligo memnon egg
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Mycropyle Structure – I

Caligo memnon

Magnification: 520:1

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Mosaic pattern on the tip of a butterfly egg (Caligo memnon). The mosaic pattern on an owl butterfly egg looks like a landing pad.

Butterfly eggs are additionally equipped with an entirely complex aeropyle system (tiny holes arranged in an actinomorphous way), with pathogen-defence: “bristle-like” structures on the inside of each hole make sure bacteria or fungi spores may not enter through the aeropyles and attack the growing embryo.