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Ralph Holzenthal
University of Minnesota, St. Paul, United States of America
http://www.insectcollection.umn.edu
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14 articles by this author

1 2
Research Article
New Atanatolica species from Ecuador (Trichoptera, Leptoceridae)
    Ernesto Rázuri-Gonzales,     Ralph W. Holzenthal, Blanca Ríos-Touma
10.3897/zookeys.793.26712
 29-10-2018
 Unique: 1654 | Total: 2658
 Reprint: € 5,00
 97-114
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Research Article
New species and a new genus of Philopotamidae from the Andes of Bolivia and Ecuador (Insecta, Trichoptera)
    Ralph W. Holzenthal, Roger J. Blahnik, Blanca Ríos-Touma
10.3897/zookeys.780.26977
 08-08-2018
 Unique: 1583 | Total: 2594
 Reprint: € 5,00
 89-108
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Research Article
Two new species of the rare Neotropical caddisfly genus Amphoropsyche Holzenthal (Trichoptera, Leptoceridae)
    Ernesto Rázuri-Gonzales,     Ralph W. Holzenthal, Blanca Ríos-Touma
10.3897/zookeys.707.20759
 10-10-2017
 Unique: 1758 | Total: 2768
 Reprint: € 3,00
 63-72
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Catalogue
Catalog of the Neotropical Trichoptera (Caddisflies)
    Ralph W. Holzenthal, Adolfo R. Calor
Part of: Catalog of the Neotropical Trichoptera (Caddisflies)
10.3897/zookeys.654.9516
 10-02-2017
 Unique: 5786 | Total: 10413
 Reprint: € 110,00
 1-566
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Research Article
A new Ecuadorian species of the rare Neotropical caddisfly genus Amphoropsyche Holzenthal (Trichoptera, Leptoceridae)
    Ralph Holzenthal, Blanca Ríos-Touma
10.3897/zookeys.640.10344
 13-12-2016
 Unique: 1820 | Total: 3159
 Reprint: € 3,00
 59-67
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Monograph
A revision of the Neotropical caddisfly genus Leucotrichia Mosely, 1934 (Hydroptilidae, Leucotrichiinae)
Robin E. Thomson,     Ralph W. Holzenthal
10.3897/zookeys.499.8360
 23-04-2015
 Unique: 3210 | Total: 5809
 Reprint: € 28,00
 1-100
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Research Article
Review and redescription of species in the Oecetis avara group, with the description of 15 new species (Trichoptera, Leptoceridae)
Roger Blahnik,     Ralph Holzenthal
Part of: Review and redescription of species in the Oecetis avara group, with the description of 15 new species (Trichoptera, Leptoceridae)
10.3897/zookeys.376.6047
 03-02-2014
 Unique: 4316 | Total: 7003
 Reprint: € 28,00
 1-83
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Research Article
Three new species of Atopsyche Banks (Trichoptera, Hydrobiosidae) from Brazil
Allan Santos,     Ralph Holzenthal
10.3897/zookeys.207.3419
 11-07-2012
 Unique: 4701 | Total: 6644
 Reprint: € 4,00
 65-78
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Research Article
New species and records of Hydroptilidae (Trichoptera) from Venezuela
Robin Thomson,     Ralph Holzenthal
10.3897/zookeys.185.2909
 23-04-2012
 Unique: 5995 | Total: 8620
 Reprint: € 7,00
 19-39
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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: 5455 | Total: 8129
 Reprint: € 10,00
 1-33
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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: 6344 | Total: 8756
 Reprint: € 16,00
 41-100
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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: 5675 | Total: 7770
 Reprint: € 2,00
 59-65
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