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Daniel Janzen        
University of Pennsylvania
Philadelphia, United States of America
http://janzen.sas.upenn.edu
7 articles by this author
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Research Article
Two new reared species of Heteropteron Brullé (Hymenoptera, Braconidae, Cardiochilinae) from northwest Costa Rica, with the first definitive host records for the genus
Elizabeth Zhu Dabek,     James B. Whitfield, Winifred Hallwachs,     Daniel H. Janzen
10.3897/jhr.77.50577
 29-06-2020
 Unique: 1415 | Total: 2239  | Access Period:
 Reprint: € 4,80
 151-165
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Research Article
Synopsis of New World Sigalphinae (Hymenoptera, Braconidae) with the description of two new species and a key to genera
    Michael J. Sharkey,     Angélica Maria Penteado-Dias,     M. Alex Smith, Winnie Hallwachs,     Daniel Janzen
10.3897/jhr.68.30131
 25-02-2019
 Unique: 1929 | Total: 3325  | Access Period:
 Reprint: € 3,60
 1-11
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Research Article
Revision of the genus Promicrogaster (Hymenoptera, Braconidae, Microgastrinae) from Area de Conservación Guanacaste, Costa Rica, with a key to all species previously described from Mesoamerica
    Jose Fernandez-Triana,     Caroline Boudreault, Tanya Dapkey,     M. Alex Smith, Josephine Rodriguez, Winnie Hallwachs,     Daniel H. Janzen
10.3897/JHR.50.8220
 27-06-2016
 Unique: 3684 | Total: 6918  | Access Period:
 Reprint: € 15,60
 25-79
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Research Article
Revision of the neotropical genus Sendaphne Nixon (Hymenoptera, Braconidae, Microgastrinae)
    Jose L. Fernandez-Triana,     James B. Whitfield,     M. Alex Smith, Winnie Hallwachs,     Daniel H. Janzen
10.3897/JHR.41.8586
 22-12-2014
 Unique: 3133 | Total: 5500  | Access Period:
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 1-29
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Research Article
Review of the Neotropical genus Prasmodon (Hymenoptera, Braconidae, Microgastrinae), with emphasis on species from Area de Conservación Guanacaste, northwestern Costa Rica
    Jose Fernandez-Triana,     James Whitfield,     M. Alex Smith,     Yves Braet, Winnie Hallwachs,     Daniel Janzen
10.3897/jhr.37.6748
 28-03-2014
 Unique: 4568 | Total: 8377  | Access Period:
 Reprint: € 14,50
 1-52
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Research Article
Food plants and life histories of sawflies of the families Argidae and Tenthredinidae (Hymenoptera) in Costa Rica, a supplement
David Smith,     Daniel Janzen, Winnie Hallwachs
10.3897/jhr.35.5496
 25-10-2013
 Unique: 5225 | Total: 10870  | Access Period:
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 17-31
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Research Article
Hyperparasitoid wasps (Hymenoptera, Trigonalidae) reared from dry forest and rain forest caterpillars of Area de Conservación Guanacaste, Costa Rica
David Smith,     Daniel Janzen, Winnie Hallwachs,     M. Alex Smith
10.3897/jhr.29.3233
 15-10-2012
 Unique: 7315 | Total: 10944  | Access Period:
 Reprint: € 8,40
 119-144
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