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
Goulet, H. 1983. The genera of Holarctic Elaphrini and species of Elaphrus Fabricius (Coleoptera: Carabidae): Classification, phylogeny and zoogeography. Quaestiones Entomologicae, 19:219-482.
Goulet, H., and A. Smetana. 1983. A new species of Blethisa Bonelli from Alaska, with proposed phylogeny, biogeographic history, and key to known species (Coleoptera: Carabidae). The Canadian Entomologist, 115:551-558.
Lindroth, C.H. 1954. A revision of Diacheila Motschulsky and Blethisa Bonelli with remarks on Elaphrus larvae (Col.: Carabidae). Kungliga Fysiografiska Sällskapets Hanglingar (N.F.), 65:1-28.
Page copyright © 1995 David R. Maddison
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Citing this page:
Tree of Life Web Project. 1995. Blethisa http://tolweb.org/Blethisa/1089/1995.01.01 in The Tree of Life Web Project, http://tolweb.org/. Version 01 January 1995 (temporary).