James S. Ashe (1947-2005) and Stylianos Chatzimanolis
Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window
taxon links Phylogenetic position of group is uncertainPhylogenetic position of group is uncertain[down<--]Deinopsini Interpreting the tree
close box

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.

example of a tree diagram

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.

For more information on ToL tree formatting, please see Interpreting the Tree or Classification. To learn more about phylogenetic trees, please visit our Phylogenetic Biology pages.

close box
phylogeny from Klimaszewski (1979)
Containing group: Deinopsini


The five known species of Metadeinopsis are medium-sized (3.5-5.3 millimeters in length), teardrop-shaped, brown to dark brown aleocharines. They are probably associated with leaf litter or detritus in swampy habitats, though collecting information for these rare beetles is very limited. The species of Metadeinopsis are found only in the Neotropical region (currently known from Paraguay, Brazil, Columbia, Ecuador, French Guiana and Peru).


Adults of Metadeinopsis can be distinguished from those of other Deinopsini by the combination of: 5-5-5 tarsal formula; maxillary palpus 3-segmented; abdominal tergite X with broadly rounded apex; and, antennal segment XI with apical papilla (from Klimaszewski 1979). Klimaszewski (1979) provided descriptions, distributional information, illustrations of structural features, and a key for identification of the known species. Additional distributional information is found in Klimaszewski (1982).

Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window

Mouthparts of M. brunnea, from left to right, mandibles, maxilla, hypopharynx and labium.

From left to right, details of mandible, labrum and epipharynx.

Discussion of Phylogenetic Relationships

Klimaszewski (1979) provided the only available phylogeny for three of the species of Metadeinopsis. Because adults of Metadeinopsis are externally extremely similar, the phylogeny is based mostly on characteristics of the terminalia and genitalia and should be considered very provisional. The phylogenetic positions of M. balli and M. ferox have not been examined.


Ashe, J. S. 2002. Allodinopsis, new genus of Deinopsine Aleocharinae from Cetral America, and a new species of Metadeinopsis Klimaszewski 1979 (Staphylinidae: Aleocharinae: Deinopsini). J. Kans. Entomol. Soc. 75(2): 61-72.

Klimaszewski, J. 1979. A revision of the Gymnusini and Deinopsini of the World. Canada Agriculture monograph No. 25. 169 pp.

Klimaszewski, J. 1982. A revision of the Gymnusini and Deinopsini of the world (Coleoptera: Staphylinidae). Supplement 2. Canadian Entomologist 114: 317-335.

Klimaszewski, J. and F. Genier. 1985. A revision of the Gymnusini and Deinopsini of the World. Sup 3. Colepts. Bull. 39(1): 60-66.

Title Illustrations
Click on an image to view larger version & data in a new window
Click on an image to view larger version & data in a new window
Scientific Name Metadeinopsis brunnea
Location Paraguay
Size length 3.6 mm
Copyright © 1997 James S. Ashe (1947-2005)
About This Page

Development of this page made possible by National Science Foundation PEET grant DEB 95-21755 and DEB 99-78110 to James S. Ashe.

All images on this page copyright © 1997-2003 James S. Ashe.

James S. Ashe (1947-2005)
University of Kansas, Lawrence, Kansas, USA

Stylianos Chatzimanolis
University of Tennessee at Chattanooga

All Rights Reserved.

Citing this page:

Ashe (1947-2005), James S. and Stylianos Chatzimanolis. 2003. Metadeinopsis. Version 06 November 2003. in The Tree of Life Web Project,

edit this page
close box

This page is a Tree of Life Branch Page.

Each ToL branch page provides a synopsis of the characteristics of a group of organisms representing a branch of the Tree of Life. The major distinction between a branch and a leaf of the Tree of Life is that each branch can be further subdivided into descendent branches, that is, subgroups representing distinct genetic lineages.

For a more detailed explanation of the different ToL page types, have a look at the Structure of the Tree of Life page.

close box


Page Content

articles & notes



Explore Other Groups

random page

  go to the Tree of Life home page