title: Chromosomes and meiosis in two species of Dermaptera.
abstract: The chromosome cytology of two species of Dermaptera, namely Diplatys gladiator and Forficula sp., has been studied. The diploid number of chromosomes in male Diplatys gladiator is 18 (16AA + XY), whereas in male Forficula sp. it is 27 (24AA + X1X2Y). These are the two new chromosome numbers for Dermaptera. The evolutionary status of Forficula sp. in the family Forficulinae has been emphasized.
mesh_terms: D000818:Animals; D002875:Chromosomes; D004171:Diploidy; D007313:Insecta / Q000235:genetics*; D007621:Karyotyping; D008297:Male; D008540:Meiosis; D008677:Metaphase; D012730:Sex Chromosomes; D013045:Species Specificity; D013093:Spermatogonia / Q000648:ultrastructure*; D013094:Spermatozoa / Q000648:ultrastructure*