Phylogenetic Systematics and Historical Biogeography of Malesian
Calicnemiine Damselflies (Odonata, Platycnemididae)
Gassmann, Dirk
Citation
Gassmann, D. (2005, October 19). Phylogenetic Systematics and Historical Biogeography
of Malesian Calicnemiine Damselflies (Odonata, Platycnemididae). Retrieved from
https://hdl.handle.net/1887/9758
Version:
Corrected Publisher’s Version
License:
Licence agreement concerning inclusion of doctoral thesis in the
Institutional Repository of the University of Leiden
Downloaded from:
https://hdl.handle.net/1887/9758
STELLINGEN behorende bij het proefschrift
"Phylogenetic systematics and historical biogeography of Malesian calicnemiine damselflies (Odonata, Platycnemididae)"
Dirk Gassmann, 19.10.2005
1. The Calicnemiinae probably reached Southeast Asia via the Indian craton in the early Cenozoic.This thesis.
2. The ancestor of the Calicnemiinae of the Papuan region and the non-continental parts of the Philippines has possibly reached New Guinea from the Asian mainland and/or Palawan via a Late Cretaceous/Early Eocene "Inner Melanesian Arc". This thesis.
3. An extensive study of the relationships within the Coenagrionoidea and the Lestoidea, respectively, and between these taxa, is necessary to test the assumed monophyly of Platycnemididae and Calicnemiinae. This thesis.
4. Damselflies (Zygoptera) are suitable subjects for historical biogeographic studies. This thesis.
5. Research proposals in morphological phylogenetics, which combine revisional and cladistic work, should take into account that characters used in taxonomic revisions are not necessarily the most suited for phylogenetic analyses.
6. Contrary to the widespread diction in the literature, one can never present a phylogeny of a certain group of taxa, but only a phylogeny reconstruction.
7. The problems in both taxon- and area-cladistic reconstructions are basically the same, but they are more relevant in the latter.
8. Historical ('vertical') species concepts, applied in practice, turn into typological ('morphological') species concepts.
Opposite Wheeler & Platnick (2000): 64-65.
