Cethosia Biblis Micropyle
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Micropyle Structure – III

Cethosia biblis

Magnification: 250:1

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Mosaic pattern on the tip of a Red Lacewing (Cethosia biblis) butterfly egg . At the center of the mosaic pattern is a minute opening, called a micropyle, through which the sperm enters the egg. The egg additionally features an entirely complex aeropyle system (tiny interconnected holes arranged in a beautiful ornament pattern) with efficient pathogen-defence: bacteria or fungi spores may not enter through the aeropyles and attack the growing embryo.