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The symbiosis in an attelabid weevil (Euops chinesis) and a mycangial fungus (Penicillium herquei) has been recognized.However, there is a little knowledge about the symbiosis process except the mycangium structure and comb plates of Euops weevils.The depth observation in nature and examination in laboratory reveal that weevil female is morphologically and behaviorally adapted to this symbiosis.She cuts the leaf with a modified front leg, puncture holes in the both sides of cut leaf with a pair of conical structures on her head, inoculates the leaf with P.herquei spores in mycangium, moves the spores into the holes with comb-like setae, deposits an egg, rolls the leaf into a "cradle" and finally cuts the cradle from the rest of the leaf so that it falls to an improved environment on the soil surface.