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This is an archived version of a Tree of Life page. For up-to-date information, please refer to the current version of this page.


taxon links [down<--]Coleoptera [up-->]Lepicerus [up-->]Torridincolidae [up-->]Hydroscaphidae [up-->]Sphaeriusidae Interpreting the tree
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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.

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Tree from Beutel, Maddison, and Haas (1999) and Beutel (1999).
Containing group: Coleoptera


Beutel, R.G. 1999. Phylogenetic analysis of Myxophaga (Coleoptera) with a redescription of Lepicerus horni (Lepiceridae). Zool. Anz., (1998/99):291-308.

Beutel, R.G., D.R. Maddison, and A. Haas. 1999. Phylogenetic analysis of Myxophaga (Coleoptera) using larval characters. Systematic Entomology, 24:171-192.

Hinton, H. E. 1967. On the spiracles of the larvae of the suborder Myxophaga (Coleoptera). Australian Journal of Zoology, 15, 955-959.

Hinton, H. E. 1969. Plastron respiration in adult beetles of the suborder Myxophaga. Journal of Zoology, 159, 131-137.

Lawrence, J. F. & H. Reichardt. 1991. Torridincolidae (Myxophaga), Microsporidae (Myxophaga) (=Sphaeriidae), Hydroscaphidae (Myxophaga). Immature Insects, Vol. 2. (ed. by F. W. Stehr), pp. 302-304. Kendall/Hunt Publishing Company, Dubuque, Iowa.

Reichardt, H. 1973. A critical study of the suborder Myxophaga, with a taxonomic revision of the Brazilian Torridincolidae and Hydroscaphidae (Coleoptera). Arquivos de Zoologia, S. Paulo 24(2):73-162.

Reichardt, H. 1974. Relationships between Hydroscaphidae and Torridincolidae, based on larvae and pupae, with the description of the immature stages of Scaphydra angra (Coleoptera, Myxophaga). Revista Brasileira de Entomologia, 18 (4), 117-122.

Title Illustrations
Scientific Name Sphaerius sp.
Location USA: Arizona: Sycamore Canyon
Specimen Condition Live Specimen
Life Cycle Stage adult
Copyright © 2001 David R. Maddison
Scientific Name Hydroscapha natans
Location USA: Arizona: Sycamore Canyon
Specimen Condition Live Specimen
Copyright © 2001 David R. Maddison
About This Page
Citing this page:

Maddison, David R. 1995. Myxophaga. Version 01 January 1995 (temporary). http://tolweb.org/Myxophaga/8871/1995.01.01 in The Tree of Life Web Project, http://tolweb.org/

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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.

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