The ultrastructure of spermiogenesis in four species of Coccoidea (Insecta, Homoptera)
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文摘

The spermiogenesis ultrastructure of 4 Homoptera Coccoidea (Insecta) is described.

An atypical motile sperm flagellum consisting of a bundle of singlet microtubules is described.

The microtubules of the bundle have a greater diameter in their proximal region.

The secondary sheath enveloping the sperm bundle is secreted by the cyst cell.

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