Chromosomes of fishflies. Mitotic karyotypes of spermatogonial cells (A–C) and diakinesis of meiosis in the spermatocyte (D) A Orohermes crepusculus (2n = 20 + XY) B Dysmicohermes disjunctus (2n = 20 + XY) C Dysmicohermes ingens (male: 2n = 20 + XY) D Nigronia serricornis (2n = 18 + Xyp). Arrow indicates the parachute-type sex bivalent (Xyp). Scale bar: 5 μm.

 
 
  Part of: Takeuchi Y, Iizuka K, Nakazato T, Koishi H, Hoshiba H (2025) Chromosomes of four fishfly species (Megaloptera, Corydalidae, Chauliodinae) from North America. Comparative Cytogenetics 19: 83-90. https://doi.org/10.3897/compcytogen.19.146136