Capnia in part 1C. Riley Nelson
This tree diagram shows the relationships between several groups of organisms.
The root of the current tree connects the organisms featured in this tree to their containing group and the rest of the Tree of Life. The basal branching point in the tree represents the ancestor of the other groups in the tree. This ancestor diversified over time into several descendent subgroups, which are represented as internal nodes and terminal taxa to the right.
You can click on the root to travel down the Tree of Life all the way to the root of all Life, and you can click on the names of descendent subgroups to travel up the Tree of Life all the way to individual species.close box
This Nearctic assembly of groups of species of Capnia is monophyletic, but species from the Palearctic have not been studied in detail to see if they belong in this group of groups. Pending such observations I hesitate giving it a formal name. The group names contained herein are taken from Nelson & Baumann (1989).
Synapomorphies for Capnia: Various authors have placed any capniid of unknown generic affinities into the genus Capnia. No synapomorphies are known which circumscribe all, or even most, of the species placed in "Capnia". The informal recognition of this "group or groups" is a step in ameliorating this situation. This group, "Capnia, in part, 1" is united as such by the synapomorphy of UNDER CONSTRUCTION see characters 5 and 35 in matrix of "capnia data of 16 Oct 1991".
Nelson, C. R. & R. W. Baumann. 1989. Systematics and distribution of the winter stonefly genus Capnia (Plecoptera: Capniidae) in North America. Great Basin Natur. 49: 289-363.
C. Riley Nelson
Brigham Young University, Provo, Utah, USA
Page copyright © 1996
All Rights Reserved.
Citing this page:
Nelson, C. Riley. 1996. Capnia in part 1. Version 01 January 1996 (under construction). http://tolweb.org/Capnia_in_part_1/14106/1996.01.01 in The Tree of Life Web Project, http://tolweb.org/