title: Ag-banded karyotypes in six species of jewel-beetles (Coleoptera, Buprestidae).
abstract: The male karyotypes of six species of the buprestid genera Sphenoptera (two species) and Acmaeoderella (four species) were studied after Ag-banding. The following karyotypes were found in individual species: n = 19-23, with predominance of 23, in Sphenoptera scovitzi Fald., 2n = 24 (22 + Xyp) in Sphenoptera mesopotamica Mars., 2n = 18 (16 + Xyr) in Acmaeoderella flavofasciata Pill. & Mitt., Acmaeoderella gibbulosa Men., Acmaeoderella boryi Brulle, Acmaeoderella vetusta Men. In Sph. scovitzi, two chromosome pairs were found to display stable argentophilous blocks. In Sph. mesopotamica, NOR-bearing is one of the large autosomal bivalents. In all species of the genus Acmaeoderella, a nucleolus-like argentophilous body is placed between the X and y chromosomes.
authors.affiliation: Institute of Zoology, National Academy of Sciences of Armenia, P. Sevak 7, 375014 Yerevan, Armenia. gka@freenet.am
authors.forename: G
authors.initials: G
authors.lastname: Karagyan
mesh_terms: D000818:Animals; D001517:Coleoptera / Q000166:cytology / Q000235:genetics* / Q000502:physiology; D007621:Karyotyping; D008297:Male; D012730:Sex Chromosomes / Q000235:genetics*; D016622:Silver Staining