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Species Pseudomasaris edwardsii

Pseudomasaris edwardsii - female Pollen Wasp #2 - Pseudomasaris edwardsii - female Pseudomasaris edwardsii - male Wasp - Pseudomasaris edwardsii Pseudomasaris edwardsii - female Pseudomasaris sp. provisioning cells - Pseudomasaris edwardsii Pseudomasaris sp. provisioning cells - Pseudomasaris edwardsii Is this Pseudomasaris edwardsii? - Pseudomasaris edwardsii - female
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hymenoptera (Ants, Bees, Wasps and Sawflies)
No Taxon (Aculeata - Ants, Bees and Stinging Wasps)
Superfamily Vespoidea (Yellowjackets and Hornets, Paper Wasps; Potter, Mason and Pollen Wasps and allies)
Family Vespidae (Yellowjackets and Hornets, Paper Wasps; Potter, Mason and Pollen Wasps)
Subfamily Masarinae (Pollen Wasps)
Genus Pseudomasaris
Species edwardsii (Pseudomasaris edwardsii)
Synonyms and other taxonomic changes
Masaris edwasrdsii Cresson 1872
Identification
Females have a swelling on the anterior side of the mid tibia (though this may be small in a few specimens, or even absent):


Males can be identified by the unique structure of their antennae, and a slight swelling on the frons:
Range
USA: WA, OR, ID, WY, CO, UT, NV, CA, AZ
Mexico: Baja California Norte
[Canada: one adventitious occurrence in Ontario, see (1)]
Season
March - middle of August, though mostly April - July, varying with altitude and flowering of food plants.
Food
Adults may take nectar from various plants, but females provision their offspring with a mixture of Phacelia nectar and Phacelia pollen.
Print References
Torchio, P.F. 1970. The Ethology of the Wasp , Pseudomasaris edwardsii (Cresson), and a Description of Its Immature Forms (Hymenoptera: Vespoidea, Masaridae). Contributions in Science, Los Angeles County Museum 202: 1-32. (Full Text)
Works Cited
1.Identification Atlas of the Vespidae (Hymenoptera, Aculeata) of the Northeastern Nearctic Region
Matthias Buck, Stephen A. Marshall, and David K. B. Cheung. 2008. Biological Survey of Canada [Canadian Journal of Arthropod Identification].