The Practicing Systematist

Tuesday, May 15, 2007

Considerations on additional characters

In preparation for Cotithene9.winc, some characters are newly considered. At this point, the phylogenetic structure appears relatively solid, and I am looking for more support. However, the genital characters are for the most part still excluded and may change the picture.

Separation of procoxal cavities may separate dic + stri from the remaining species of Cotithene, with less ambiguity in the females than in the males.

Relative lengths of tegmina (in comparison to aedeagus length) seem to support a globulicollis-ana-mel clade. Same for relative length of tegminal apodeme (in comparison to lateral apodemes). And finally with short aedeagal apodemes. Need to check outgroup taxa.

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