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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: 1134 | Total: 1784
 Reprint: € 5,90
 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: 1067 | Total: 1725
 Reprint: € 5,90
 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: 1278 | Total: 2003
 Reprint: € 3,60
 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: 4424 | Total: 7884
 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: 1448 | Total: 2543
 Reprint: € 3,60
 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: 2571 | Total: 4558
 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: 3735 | Total: 5866
 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: 4274 | Total: 5957
 Reprint: € 4,80
 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: 5479 | Total: 7758
 Reprint: € 7,20
 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: 4942 | Total: 7148
 Reprint: € 10,50
 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: 5751 | Total: 7726
 Reprint: € 16,80
 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: 5208 | Total: 6961
 Reprint: € 2,60
 59-65
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