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.
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