Notonecta glauca (testis/ovary) a, b mitotic metaphase in a ovariole: a with 24 chromosome elements b with 26 chromosome elements c, d mitotic metaphase in a testis: c with 24 chromosome elements d with 26 chromosome elements. Scale bar:10 μm.

  Part of: Stoianova D, Simov N, Vu MQ, Nguyen DM, Grozeva S (2020) New data on karyotype, spermatogenesis and ovarian trophocyte ploidy in three aquatic bug species of the families Naucoridae, Notonectidae, and Belostomatidae (Nepomorpha, Heteroptera). Comparative Cytogenetics 14(1): 139-156.