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The ultrastructure of mature spermatozoa of three cicada species,    Subpsaltria   yangi   ,    Karenia   caelatata   , and    Platypleura   kaempferi   , was investigated using epifluorescence and transmission electron microscopies. This is the first investigation of the sperm ultrastructure of species in the subfamily   Tibicininae   and the tribe   Sinosenini  , represented by    S.   yangi    and    K.   caelatata   , respectively. The three species all produce two or three types of spermatozoa with various lengths, viz., polymegaly. The centriolar adjunct of spermatozoa in    S.   yangi    shows a granular substructure, which is different from that of other cicada species, suggesting that spermatozoa in   Tibicininae   may have their own characteristics in comparison with other cicadas. The centriolar adjunct of spermatozoa of    K.   caelatata    displays characteristics similar to that of the   Cicadinae  . Combined with other morphological characters, it is reasonable to remove    K.   caelatata    and its allies (i.e.,   Sinosenini  ) from   Cicadettinae   to   Cicadinae  . The study of sperm ultrastructure, particularly in the species of   Tibicininae   and   Sinosenini  , expands the spermatological research of   Cicadidae   and provides more information for phylogenetic analysis of   Cicadidae  .

Ultrastructure of spermatozoa in three cicada species from China ( Hemiptera , Cicadomorpha , Cicadidae )