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Abnormal male gametogenesis and supernumerary centrioles in differentiating spermatids. Details (A) of spermatids of the termite Reticulitermes with a pair of orthogonal centrioles (arrow) and (B) spermatids of the thrips Haplothrips showing three parallel centrioles (arrows) (B). (C) Each centriole in thrips spermatid organizes distinct axonemes (arrows) that fuse in a single large microtubule bundle (arrowheads). Bars 200 nm.
