title: The B chromosome system of Trypoxylon (Trypargilum) albitarse (Hymenoptera, Sphecidae) 1. Banding analysis.
abstract: Karyotypic analyses of 366 specimens of the solitary wasp Trypoxylon (Trypargilum) albitarse collected from ten populations in the municipalities of Viçosa and Porto Firme (Minas Gerais, Southeastern Brazil), revealed the presence of two morphological types of supernumerary (B) chromosomes. C-banding and fluorochrome banding suggest that the B chromosomes of T. albitarse may have originated from heterochromatin breaks within the standard (A) chromosome complement.
authors.affiliation: Departamento de Biologia Geral, Universidade Federal de Viçosa (UFV), Minas Gerais, Brasil.
authors.forename: S M
authors.initials: SM
authors.lastname: Araújo
authors.forename: S G
authors.initials: SG
authors.lastname: Pompolo
authors.forename: J A
authors.initials: JA
authors.lastname: Dergam
authors.forename: L A
authors.initials: LA
authors.lastname: Campos
mesh_terms: D000818:Animals; D002503:Centromere; D002869:Chromosome Aberrations / Q000235:genetics*; D002871:Chromosome Banding; D005260:Female; D006927:Hymenoptera / Q000235:genetics*; D007621:Karyotyping; D008297:Male; D014863:Wasps / Q000235:genetics