Cariología beta de tres especies pertenecientes al grupo de especies Drosophila mesophragmatica

Abstract

We present the metaphase karyotypes of three species belonging to the species group Drosophila mesophragmatica, two Ecuadorian species new to science: Drosophila chorlavi Céspedes & Rafael, 2012, Drosophila rucux Rafael & Céspedes, 2012 and the third D. mesophragmatica Duda, 1927 corresponds to a population of the Ecuadorian Andes. The number 2n = 10 is shared by the three species; in the karyotypes are clearly identifiable autosomes 4 and 5 and the Y sex chromosome, while the autosomes 2 and 3 as well as the sex chromosome X are virtually indistinguishable from them. The three species differ slightly in heterochromatin content and markedly in autosomal morphology 5.