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Aflagellate sperm. (A) Cross section of aflagellate sperm (arrows) in the homopteran aleyrodid Bemisia. (B) Spermatid of the archaeococcidae Matsucoccus showing a pair of orthogonal centrioles (arrow) and a peripheral bundle of microtubules (arrowhead) emerging from a cluster of dense material (asterisk); insets are cross sections at different levels within the microtubule bundle. Bars: A,B, 1 mm; insets, 200 nm.
