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Habronattus americanus group

Wayne Maddison
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taxon links [up-->]Habronattus waughi [up-->]Habronattus kawini [up-->]Habronattus tarsalis [up-->]Habronattus ophrys [up-->]Habronattus mustaciata [up-->]Habronattus tuberculatus [up-->]Habronattus sansoni [up-->]Habronattus bulbipes [up-->]Habronattus americanus [down<--]Habronattus Interpreting the tree
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Tree from Griswold (1987).
Containing group: Habronattus

Introduction

The americanus group includes some of the most colorful species of salticids. This primarily western group is recognized by the form of its palpus, the black first tarsus, and its remarkable ornaments on the face and palpi. In several of the named species (americanus, sansoni, tarsalis), there is strong geographic differentiation, to the extent that many more species may eventually be recognized in this group.

Characteristics

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The americanus group has a distinctive palpus, both in having the bulb only slightly rotated counterclockwise from the condition in the related genus Pellenes, and in having a distinctively shaped tegular apophysis. In addition, the first legs are somewhat long and the tarsal area has a black scopula (see figure).

The ornaments consist of a typically fringed first leg, striped or colored cymbium, and high clypeus that may be striped, metallic blue or green, or otherwise colored. Long setae on the clypeus extend forward from the face, and setae around the front eyes often make an eyebrow or other tuft. Except for H. americanus and H. waughi, the latter of which reaches the Atlantic coast of Canada, all species are western.

References

Griswold, C. E. 1987. A revision of the jumping spider genus Habronattus F.O.P.-Cambridge (Araneae; Salticidae), with phenetic and cladistic analyses. University of California Publications, Entomology 107: 1-344.

Title Illustrations
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Scientific Name Habronattus americanus
Location Mt. Pinos, California, USA
Specimen Condition Live Specimen
Sex Male
Copyright © 1994-1995 Wayne Maddison
Scientific Name Habronattus tarsalis
Location Bishop, California, USA
Comments may actually be nearer kawini
Specimen Condition Live Specimen
Sex Male
Copyright © Wayne Maddison
About This Page

Wayne Maddison
University of British Columbia, Vancouver, British Columbia, Canada

Correspondence regarding this page should be directed to Wayne Maddison at

All Rights Reserved.

Citing this page:

Maddison, Wayne. 1995. Habronattus americanus group. Version 01 January 1995 (under construction). http://tolweb.org/Habronattus_americanus_group/3998/1995.01.01 in The Tree of Life Web Project, http://tolweb.org/

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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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