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Reconstruction of stem species pattern as a strategy towards integrated phylogenetic systematics and taxonomy, applied to early-derivative Poronota (Oribatida)

Weigmann, G.


2010 - Volume: 50 Issue: 3 pages: 291-315

DOI: 10.1051/acarologia/20101972

Keywords

Acari oribatid mites cladistic phylogeny evolutionary reversals

Abstract

The stem species concept is a modified method of phylogenetic systematics which uses not only apomorphies of taxa but also plesiomorphic character states for the assessment of phylogenetic interrelations. In a theorectical section the concept is outlined, and differentiated criteria on the homology of character states are presented on a background of conceptual models on epigenetic control of phenotypical characters. The method is exemplified with families of the early-derivative Poronota of oribatid mites. The superfamily Oribatelloidea is placed in the early-derivative Poronota, for which group a phylogenetic cladogram is proposed. As a result of the analyses, the problem of family diagnoses is discussed, resulting from the issue that classical diagnostic characters are evolved partly within the evolution of the included genera and are not stem species characters of the family.

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Article editorial history

Date received:
2009-12-28
Date accepted:
2010-05-21
Date published:
2010-09-30

(CC BY 4.0)
© 2010 Weigmann, G.

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