A chromosomal analysis of three species of Timarcha (Coleoptera, Chrysomelidae, Chrysomelinae)

作者：Petitpierre Eduard^*

来源：Comparative Cytogenetics, 2016, 10(1): 27-32.

DOI：10.3897/CompCytogen.v10i1.5570

• Coleoptera
• Chrysomelidae
• Chrysomelinae
• karyotypes
• Timarcha
• evolution

The karyotypes of three species of Timarcha Latreille, 1829 have been analysed. T. (Metallotimarcha) metallica (Laicharting, 1781), has 18 + Xy(p) 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. T. (Timarcha) carmelenae Petitpierre, 2013 displays 9 + Xyp and 2n = 20 chromosomes as in morphologically related Andalusian species, whereas T. (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.

• 出版日期2016