|Publication Type:||Journal Article|
|Year of Publication:||1971|
|Authors:||W. PETERS, KLEBA M.|
|Journal:||Annals of the Entomological Society of America|
Though the chromosome number of more than 100 species of heteropteran insects (Makino 1951, Schrader and Hughes-Schrader 1958) and investigations of mitosis and meiosis in insect spermatogenesis (Kawamura 1957, Inoue 1953, Phillips 1970) have been reported, very few chromosome studies of the water boatman, or species of Corixidae, have been published. Examining the chromosomes of 11 species of corixids and comparing them to <I>Corixa distincta</I> (Fieber), Prokofieva (1933) concluded that the standard number of diploid chromosomes for Corixidae is 24. Slack (1938) reported an exception. He found that <I>Cymatia bonsdorfii</I> (Sahlberg) has a diploid number of 26 chromosomes. To the best of our knowledge, no other investigation of chromosome number or karyotype in other species of corixid, and certainly no study of chromosomes of <I>Krizousacorixa femorata</I> (Guérin-Méneville) has been published. This species of corixid is particularly interesting because it is polymorphic and has partially asymmetrical dextral and sinistral males in which the <I>situs inversus</I> is nicely mirror-imaged (Peters 1962). Our research was undertaken to determine the number and morphology of meiotic chromosomes and to compare the chromosomes of dextral and sinistral males.