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Michael Orr    
4 articles by this author
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Research Article
A taxonomic re-assessment of the widespread oriental bumblebee Bombus flavescens (Hymenoptera, Apidae)
    Chawatat Thanoosing,     Michael C. Orr, Natapot Warrit,     Alfried P. Vogler,     Paul H. Williams
10.3897/jhr.96.104715
 22-06-2023
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 507-541
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Research Article
New and little-known bees of the genus Sphecodes Latreille, 1804 (Hymenoptera, Apoidea, Halictidae) from Southern and South-Western China
    Yulia V. Astafurova,     Maxim Yu. Proshchalykin, Ze-Qing Niu,     Michael C. Orr,     Chao-Dong Zhu
10.3897/jhr.79.57276
 30-10-2020
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 145-162
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Research Article
A review and updated classification of pollen gathering behavior in bees (Hymenoptera, Apoidea)
    Zachary M. Portman,     Michael C. Orr,     Terry Griswold
10.3897/jhr.71.32671
 30-08-2019
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 171-208
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Research Article
Stiff upper lip: Labrum deformity and functionality in bees (Hymenoptera, Apoidea)
    Michael Orr, Amber Tripodi
10.3897/jhr.57.12510
 30-06-2017
 Unique: 3217 | Total: 5736  | Access Period:
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 89-101
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