title: Chromosomes of Belonocnematreatae Mayr, 1881 (Hymenoptera, Cynipidae).
abstract: Chromosomes of the asexual and sexual generation of the gall wasp Belonocnematreatae Mayr, 1881 (Cynipidae) were analyzed. Females of both generations have 2n = 20, whereas males of the sexual generation have n = 10. Cyclical deuterotoky is therefore confirmed in this species. All chromosomes are acrocentric and form a continuous gradation in size. This karyotype structure is probably ancestral for many gall wasps and perhaps for the family Cynipidae in general. Chromosome no. 7 carries a characteristic achromatic gap that appears to represent a nucleolus organizing region.
authors.affiliation: Botanical Garden, Moscow State University, Moscow 119234, Russia.
authors.forename: Vladimir E
authors.initials: VE
authors.lastname: Gokhman
authors.affiliation: Population and Conservation Biology Program, Department of Biology, Texas State University, San Marcos, TX 78666, USA.
authors.forename: James R
authors.initials: JR
authors.lastname: Ott
authors.affiliation: Department of BioSciences, Rice University, Houston, TX 77005, USA.
authors.forename: Scott P
authors.initials: SP
authors.lastname: Egan
keywords: Belonocnematreatae; Cynipidae; Hymenoptera; chromosomes; gall wasps; karyotype