title: A new contribution to the cytogenetic knowledge of Alticinae (Coleoptera, Chrysomelidae).
abstract: Seven species of Alticinae, mostly from Spain, have been chromosomally surveyed from male meiotic or mitotic cells. The two Spanish species of Oedionychus, O. cinctus and O. limbatus, have shown a karyotype of 2n=16+X+Y, with a lower number of autosomes than in their congeneric Neotropical species, but sharing with them the giant distance-paired sex-chromosomes. The Uruguayan Macrohaltica transversa has a 11+X+y meioformula, which agrees with that found in four congeneric species and in most ones of the allied genus Altica. The meioformula of Hermaeophaga ruficollis 7+Xy, differs only slightly from that reported in another congeneric species. Moreover those of Longitarsus aeruginosus 11+Xy, L. australis 13+Xy, and Psylliodes obscuroaeneus 15+Xy(p,) are similar to some of those previously published for other species in both genera.
authors.affiliation: Laboratory of Genetics, Department of Biology, University of Balearic Islands, Palma de Mallorca, Spain. dbaepv@uib.es
authors.forename: E
authors.initials: E
authors.lastname: Petitpierre
mesh_terms: D000818:Animals; D001517:Coleoptera / Q000145:classification / Q000235:genetics*; D020732:Cytogenetic Analysis; D007621:Karyotyping; D008297:Male; D008677:Metaphase; D008938:Mitosis; D012730:Sex Chromosomes / Q000378:metabolism