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- The Aculeate Hymenoptera of Trinidad, West Indies
- Hymenoptera: Vespomorpha) Biota Colombiana, Vol
- PPA Invertebrate Report Dec 2017
- Adult Emergence Order in a Community of Cavity-Nesting Bees and Wasps, And
- British Phenological Records Indicate High Diversity and Extinction Rate
- Biodiversity and Multitrophic Interactions in Changing Terrestrial
- The Psenulus Pallipes Species Group in Central Europe (Hymenoptera, Crabronidae) Dr
- First Record of <I>Xysma Dominicum</I> Antropov, 1995 (Hymenoptera: Pemphredonidae) in Puerto Rico, the Antilles, An
- From the Korean Peninsula
- Pretty River Valley Provincial Park
- Distributional Checklist of Sphecid Wasps (Hymenoptera: Ampulicidae, Sphecidae, Crabronidae) from Vietnam
- Kommentierte Rote Liste Der Grabwespen Hessens Artenliste, Verbreitung, Gefährdung
- Psenulus Pallipes (Panzer, 1798), an Adventive Wasp Species (Apoidea, Crabronidae) Newly Recorded in the Fauna of Chile
- Sphecos: a Forum for Aculeate Wasp Researchers
- Psenulus Meridionalis Beaumont, 1937, a Digger Wasp Species New to the Fauna of Poland (Hymenoptera, Crabronidae)