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Loxosceles

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taxon links [up-->]Loxosceles gaucho species group [up-->]Loxosceles reclusa species group [up-->]Loxosceles spinulosa species group [up-->]Loxosceles vonwredei species group [up-->]Loxosceles laeta species group [up-->]Loxosceles rufescens species group [up-->]Loxosceles spadecia species group Phylogenetic position of group is uncertainPhylogenetic position of group is uncertainPhylogenetic position of group is uncertainPhylogenetic position of group is uncertainPhylogenetic position of group is uncertainPhylogenetic position of group is uncertainPhylogenetic position of group is uncertainPhylogenetic position of group is uncertainPhylogenetic position of group is uncertainPhylogenetic position of group is uncertainPhylogenetic position of group is uncertain[down<--]Sicariidae 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.

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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 Binford et al. (2008)
Containing group: Sicariidae

Other Names for Loxosceles

References

Binford, G.J., Callahan, M.S., Bodner, M.R., Rynerson, M.R., Berea Nez, P., Ellison, C.E., Duncan, R.P. 2008. Phylogenetic relationships of Loxosceles and Sicarius spiders are consistent with Western Gondwanan vicariance. Molecular Phylogenetics and Evolution 49:538-553.

Gertsch, W.J. 1958. The Spider Genus Loxosceles in North America, Central America, and the West Indies. American Museum Novitates 1907: 1-46.

Gertsch, W.J. 1967. The Spider Genus Loxosceles in South America (Araneae, Scytodidae). Bulletin of the American Museum of Natural History 138: 117-174.

Gertsch, W. J. & F. Ennik. 1983. The spider genus Loxosceles in North America, Central America, and the West Indies (Araneae, Loxoscelidae). Bulletin of the American Museum of Natural History Hist. 175: 264-360.

Title Illustrations
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Click on an image to view larger version & data in a new window
Scientific Name Loxosceles rufescens
Comments Male genitalia from a Loxosceles rufescens
Creator Dr. Kenneth Cramer
Specimen Condition Dead Specimen
Sex Male
Life Cycle Stage Adult
Body Part Right pedipalp
View Retrolateral
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
Copyright © 2005 Dr. Ken Cramer
Scientific Name Loxosceles spinulosa
Location Arebusch camp, Namibia
Creator Dr. Kenneth Cramer
Specimen Condition Live Specimen
Life Cycle Stage Adult
View Dorsal
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
Copyright © 2005 Dr. Ken Cramer
Scientific Name Loxosceles chinateca
Comments Female genitalia of a Loxosceles chinateca
Creator Dr. Kenneth Cramer
Specimen Condition Dead Specimen
Sex Female
Life Cycle Stage Adult
Body Part Epigynum
View Dorsal
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
Copyright © 2005 Dr. Ken Cramer
Scientific Name Loxosceles laeta
Comments Male genitalia from a Loxosceles laeta
Creator Dr. Kenneth Cramer
Specimen Condition Dead Specimen
Sex Male
Life Cycle Stage Adult
Body Part Right pedipalp
View Retrolateral
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
Copyright © 2005 Dr. Ken Cramer
Scientific Name Loxosceles vonwredei
Location Uisib farm, Namibia
Creator Dr. Kenneth Cramer
Specimen Condition Live Specimen
Sex Female
Life Cycle Stage Adult
View Dorsal
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
Copyright © 2005 Dr. Ken Cramer
Scientific Name Loxosceles rufescens
Comments Female genitalia from a Loxosceles rufescens
Creator Dr. Kenneth Cramer
Specimen Condition Dead Specimen
Sex Female
Life Cycle Stage Adult
Body Part Epigynum
View Dorsal
Image Use creative commons This media file is licensed under the Creative Commons Attribution-NonCommercial License - Version 3.0.
Copyright © 2005 Dr. Ken Cramer
About This Page

All Rights Reserved.

Citing this page:

Tree of Life Web Project. 2009. Loxosceles. Version 24 February 2009 (temporary). http://tolweb.org/Loxosceles/129537/2009.02.24 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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