Experientia

, Volume 32, Issue 2, pp 157–158 | Cite as

Phylogenetic position of the AmericanTimarcha Latr. (Coleoptera, Chrysomelidae) based on chromosomal data

  • E. Petitpierre
  • P. Jolivet
Article

Summary

The chromosomal analysis ofT. intricata Hald. has shown a diploid complement of 44 chromosomes, the highest number found inTimarcha and clearly different from those of the taxa previously studied. This complement favours a derivative origin of theAmericanotimarcha subgenus from a hypothetical ancestral species of 20 chromosomes. The implications of this karyotype are also discussed with some morphological, biogeographical and ecological points of view and observations.

Keywords

Phylogenetic Position Chromosomal Analysis Ancestral Species Ecological Point Derivative Origin 

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Copyright information

© Birkhäuser Verlag 1976

Authors and Affiliations

  • E. Petitpierre
    • 1
    • 2
  • P. Jolivet
    • 1
    • 2
  1. 1.Department of Genetics, Faculty of BiologyUniversity of BarcelonaBarcelona 7Spain
  2. 2.FAOBobo-Dioulasso (Haute-Volta)

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