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Ralph Holzenthal    
University of Minnesota
St. Paul, United States of America
http://www.insectcollection.umn.edu
17 articles by this author
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Research Article
New Neotropical species of Chimarra (Trichoptera, Philopotamidae)
    Roger Blahnik,     Ralph Holzenthal
10.3897/zookeys.184.2911
 21-04-2012
 Unique: 6892 | Total: 10012  | Access Period:
 Reprint: € 13,00
 1-33
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Revision ...
Research Article
Revision of the Neotropical caddisfly genus Itauara Müller, 1888 (Trichoptera, Glossosomatidae)
    Desiree Robertson,     Ralph Holzenthal
10.3897/zookeys.114.1405
 30-06-2011
 Unique: 7945 | Total: 11340  | Access Period:
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 41-100
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A ...
Research Article
A new species of Amphoropsyche (Trichoptera, Leptoceridae) from Ecuador, with a key to the species in the genus
    Ralph Holzenthal,     Luis Ernesto Rázuri Gonzales
10.3897/zookeys.111.813
 22-06-2011
 Unique: 6737 | Total: 9364  | Access Period:
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 59-65
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Twenty-four ...
Research Article
Twenty-four new species of Polycentropus (Trichoptera, Polycentropodidae) from Brazil
Steven Hamilton,     Ralph Holzenthal
10.3897/zookeys.76.790
 19-01-2011
 Unique: 7330 | Total: 9816  | Access Period:
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 1-53
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Systematics ...
Research Article
Systematics of the Neotropical caddisfly genus Notidobiella Schmid (Trichoptera, Sericostomatidae), with the description of 3 new species
    Ralph Holzenthal,     Roger Blahnik
10.3897/zookeys.71.791
 14-12-2010
 Unique: 8372 | Total: 12006  | Access Period:
 Reprint: € 11,00
 23-47
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