A chromosomal analysis of three species of Timarcha (Coleoptera, Chrysomelidae, Chrysomelinae)
نویسنده
چکیده
The karyotypes of three species of Timarcha Latreille, 1829 have been analysed. Timarcha (Metallotimarcha) metallica (Laicharting, 1781), has 18 + Xyp male meioformula and 2n = 38 chromosomes, similar to those found in the two species of subgenus Americanotimarcha Jolivet, 1948, in agreement with morphological and molecular phylogenetic grounds. Timarcha (Timarcha) carmelenae Petitpierre, 2013 displays 9 + Xyp and 2n = 20 chromosomes as in morphologically related Andalusian species, whereas Timarcha (Timarcha) parvicollis ssp. seidlitzi Kraatz, 1879 shows 11 + Xyp and 2n = 24 chromosomes, clearly differing from the previous species. These results are discussed in order to get an insight into the main trends of the chromosomal evolution in Timarcha.
منابع مشابه
Timarcha latreille (Coleoptera: Chrysomelidae, Chrysomelinae)
The leaf-beetle genus Timarcha Latreille comprises about four subgenera, 125 species and 30 subspecies, spread in eastern North America and around the Mediterranean basin. They are absent from Syria, Lebanon, Israel, and Egypt, where very probably European and African species once met, but were eradicated during the Pleistocene desertification. In Libya, it survives along the coast on the weste...
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