title: The karyotype of the parasitoid Chelonus insularis Cresson (Hymenoptera, Braconidae, Cheloninae).
abstract: The karyotype of Chelonus insularis (Hymenoptera, Braconidae, Cheloninae) is described. The males show an haploid number of seven chromosomes and the females a diploid number of fourteen chromosomes, confirming haplo-diploid sex determination. Comparisons of these results with karyotypes of other species of the same family were done and a possible mechanism involved in the karyotype evolution of this species is discussed.
authors.affiliation: Departamento de Biologia Geral, Universidade Federal de Viçosa, MG, Brazil.
authors.forename: J C
authors.initials: JC
authors.lastname: Silva Júnior
authors.forename: G
authors.initials: G
authors.lastname: Pompolo S das
authors.forename: L A
authors.initials: LA
authors.lastname: Campos
authors.forename: I
authors.initials: I
authors.lastname: Cruz
mesh_terms: D000818:Animals; D020732:Cytogenetic Analysis; D005260:Female; D006927:Hymenoptera / Q000235:genetics*; D007621:Karyotyping; D007915:Lepidoptera / Q000469:parasitology; D008297:Male