Nesting Biology of the Social Wasp Microstigmus Comes (Hymenoptera: Sphecidae, Pemphredoninae) by Robert W. Matthews

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Nesting Behavior of Crabro Argusinus and C. Hilaris (Hymenoptera: Sphecidae) by Robert W. Matthews, Allan Hook

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Nesting Behavior of Abispa ephippium (Fabricius) (Hymenoptera: Vespidae: Eumeninae): Extended Parental Care in an Australian Mason Wasp by Robert W. Matthews, Janice R. Matthews

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A Note on Trypargilum Arizonense in Trap Nests From Arizona With a Review of Prey Preferences and Cocoon Structure in the Genus (Hymenoptera, Sphecidae) by Robert W. Matthews, Janice R. Matthews

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Nesting Biology of Oxybelus Sericeus With a Discussion of Nest Guarding by Male Sphecid Wasps (Hymenoptera) by Allan W. Hook, Robert W. Matthews

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The Larva of Microstigmus Comes, With Comments on its Relationship to Other Pemphredonine Genera (Hymenoptera, Sphecidae) by Howard E. Evans, Robert W. Matthews

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Biological Notes on Two Species of Sericophorus From Australia (Hymenoptera: Sphecidae) by Robert W. Matthews, Howard E. Evans

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Notes on the Nests and Prey of Six Species of Pison in Australia (Hymenoptera: Sphecidae) by Howard E. Evans, Robert W. Matthews, Allan Hook

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Distribution and host records of Melittobia (Hymenoptera: Eulophidae) from Mexico Distribución y huéspedes de Melittobia (Hymenoptera: Eulophidae) en México by Jorge M. González, Robert W. Matthews, S. Bradleigh Vinson

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Nest architecture and colony composition of communally nesting Spilomena socialis sp. n. (Hymenoptera, Crabronidae, Pemphredoninae) from peninsular Malaysia by Stefano Turillazzi, Robert W. Matthews, Duccio Pradella, Fabio Meucci, David Baracchi

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