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Species Pseudomasaris basirufus

Pseudomasaris basirufus - female Pseudomasaris basirufus - female Pseudomasaris basirufus - female Pseudomasaris basirufus - female Death Valley Pollen Wasp on Phacelia calthifolia - Pseudomasaris basirufus - male Death Valley Pollen Wasp on Phacelia calthifolia - Pseudomasaris basirufus - male Death Valley Pollen Wasp on Phacelia calthifolia - Pseudomasaris basirufus - male Female Pollen Wasp on Phacelia calthifolia - Pseudomasaris basirufus - 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 basirufus (Pseudomasaris basirufus)
Explanation of Names
Pseudomasaris basirufus Rohwer 1912
Identification
Characteristic white marking on the clypeus, but not on the frons, sets this species apart from P. maculifrons which has a white spot on both the frons and the clypeus.
Males are more easily told apart by their antennae, and most reliably by the distance between the eyes on the vertex: nearly three ocellar diameters in P. basirufus, little more than one ocellar diameter in P. maculifrons.
Range
CA, NV, AZ(1)
Works Cited
1.Checklist of species of the subfamily Masarinae (Hymenoptera, Vespidae)
Carpenter J.M. 2001. American Museum novitates 3325. 40 pp.